Thematic Progression

C1 · Text organisation: learn to build a paragraph as an A → B → C chain, where the new information in one sentence (the rheme) becomes the starting point of the next (the theme). Learn to recognise the link, choose how to make it (repetition, a synonym, a demonstrative with a noun, or a summarising noun), ensure that each link adds something new without unintended ambiguity, and return to the main point when needed.

Published October 3, 2026

Linear thematic progression: a chain in which new information becomes familiar

1. Linear progression: the rheme becomes the theme

Each sentence has a starting point, the theme (Theme), and what is said about it, the rheme (Rheme). The theme comes at the beginning of the clause and tells the reader what follows; the rheme develops the message.

In linear (simple) progression, new information in one sentence becomes the next sentence's theme. The second sentence's rheme becomes the third sentence's theme, forming a chain: A → B, B → C, C → D. Readers move as if up steps: each rests on the previous one, and they need not guess why the text has suddenly changed direction.

The chain often follows a 'given-to-new' principle: the next sentence starts with something already mentioned. However, a theme is not always given information, nor is a rheme exclusively new information. Here, these terms primarily describe how the message is organised.

How to build it

sentence 1: theme → new idea A; sentence 2: A → new idea B; sentence 3: B → further development

The expedition discovered a sealed cave. That cave contained pottery from the Bronze Age.

The first sentence's rheme, a sealed cave, opens the second and receives new information about its contents.

A storm damaged the pier. The pier had been the town's main landing point for fish. That role is now played by a temporary jetty.

A three-link chain: the pier, its role, and the replacement performing that role.

2. What exactly to pick up

Pick up the element of the rheme carrying the news: a key noun, a whole event or a property. Secondary parts of the rheme, such as place or time, may be left undeveloped.

When a rheme has several suitable elements, the next sentence's predicate guides the choice: asking 'which of the things mentioned could do this?' almost always rules out irrelevant options. If the new sentence's beginning returns to the previous subject, however, this is a constant theme rather than a chain.

The linking element need not be the English clause's subject: it may appear in an adverbial or form part of a subject expression. What matters is that the reader sees familiar information first.

The committee requested extra data from three hospitals. Those hospitals had already submitted their annual figures.

A key group from the rheme is picked up: the hospitals, not the committee.

A fire destroyed the archive on Tuesday. The archive held records dating back to 1850.

The next sentence picks up the object of the news from the rheme, not its time.

3. Ways to make the link

An idea can be picked up through repetition, an appropriate synonym, a demonstrative with a noun or a general label for the event. Survey can sometimes be followed by study, but these words are not interchangeable in every context. This decision, that delay or these measures explicitly identifies the earlier action being summarised.

It or this without a noun is often perfectly clear. If several interpretations are possible and matter for the conclusion, add a label: this decision, that delay. A pronoun may also deliberately summarise several actions together.

An event label can be formed from a verb or adjective (postpone → postponement, durable → durability), or an appropriate general label can be chosen. Demonstratives agree in number: this ban, these bans. An already familiar singular countable noun usually needs a determiner: the centre or this centre.

A bakery introduced a loyalty card. The loyalty card gives a free loaf after ten visits.

Repetition: the simplest way to pick up an idea.

The ministry commissioned an audit of school meals. The review found wide differences between regions.

A synonym gives the same referent a different name.

The tribunal dismissed the complaint. This decision cannot be appealed.

A summarising noun labels the entire action in the first sentence.

4. Every link must add something new

Picking up an idea only opens the sentence. The rheme must then add something the reader does not yet know: a property, consequence, reason, restriction or number. A link that merely restates the previous sentence goes in circles and leads nowhere.

When editing, therefore, check two things separately: does the beginning pick up the previous sentence's new information, and does the ending add information of its own? If either is absent, the chain is broken or empty.

The city opened a night market. The market draws about three thousand visitors on Saturdays.

A link plus new information: the chain works.

The city opened a night market. That market is a market opened by the city.

The sentences are grammatical but restate each other: the reader gets nothing new.

5. When the chain breaks

The most common break occurs when the second sentence is grammatically flawless but begins with a new topic and ignores the rheme. This is not an error of form, but a failure to achieve coherence: the reader cannot see why the text moved elsewhere.

An unclear link can make reading harder if this allows several substantially different interpretations. But referring to the whole preceding situation is also normal usage.

A chain can gradually lead a text away from its main point. Check the paragraph's overall direction and explicitly return to its topic when necessary. There is no universal limit of five or six links.

The gallery reopened its east wing. Entry tickets were reprinted last month.

Grammatically correct, but the second sentence picks up nothing from the rheme.

The bank raised its fees and closed two branches. This angered customers.

This can naturally summarise both actions together. If only the fee increase or only the closures are meant, name the relevant action explicitly.

6. Sentence openings: passives, adverbials and subject expressions

The linking phrase does not always fit naturally as the subject. If it was an object, a passive lets you put it first and move the agent to the end. This works well when the agent is new information.

The link may appear in an opening adverbial: Under this scheme, In that trial, Along this lane. Such an adverbial starts the sentence with familiar information while maintaining the chain.

A subject expression can also pick up an idea: How long it will last or What this means. The deciding factor is not the form, but whether information familiar to the reader comes first.

A team in Kyoto has built a robotic hand. The hand was tested on forty patients.

The passive places the object being picked up first.

A new cycling lane opened in March. Along this lane, traffic has fallen by a fifth.

An adverbial containing the link puts familiar information at the beginning.

7. Distinctions: linear, constant and split

Linear progression builds a chain: a rheme becomes a theme. Constant-theme progression keeps the same starting point across several sentences. Split-rheme progression divides one rheme into several branches, which are then developed separately. These patterns coexist in the same text.

A practical rule: if the next sentence starts with what was already the previous sentence's theme, this is a constant theme. If it starts with part of the rheme, this is a linear link. If the rheme announces several points and each is then developed separately, this is a split rheme.

Patterns mix in real texts, and that is normal: identifying which pattern operates in a particular transition is itself an editing skill.

The ferry carries cars to a small island. That island has no bridge.

A linear link: the first sentence's rheme opens the second.

The ferry leaves at six. It stops at three islands. It returns after noon.

A constant theme: every sentence starts with the ferry.

Common mistakes

Incorrect:The agency approved a pilot scheme. These scheme will run for two years.

Correct:The agency approved a pilot scheme. This scheme will run for two years.

The demonstrative agrees with the noun in number: scheme is singular, so use this scheme, not these.

Incorrect:The committee rejected the proposal. This rejections disappointed several members.

Correct:The committee rejected the proposal. This rejection disappointed several members.

This agrees with singular rejection. If several decisions are meant, use these rejections.

Incorrect:The firm has opened a research centre. The centre employ forty scientists.

Correct:The firm has opened a research centre. The centre employs forty scientists.

The centre is singular, so the Present Simple verb takes -s: employs.

Incorrect:The firm has opened a research centre. Centre employs forty scientists.

Correct:The firm has opened a research centre. The centre employs forty scientists.

The already identified singular countable noun being picked up needs a definite article or demonstrative.

Sources

Constant-theme progression: one paragraph focus, a new rheme each time

1. Theme and rheme: a sentence's starting point

The theme is the message's point of departure, and the rheme develops it. In a neutral statement, the subject is often the theme, but an initial adverbial can also provide a theme or frame. In this lesson, track the paragraph's main focus: does it return at the beginning of several messages?

Thematic progression describes how the themes and rhemes of neighbouring sentences connect. There are several patterns. The focus here is constant-theme progression: the same theme begins several sentences, while each new rheme adds new information.

How to build it

same theme → fact 1; same theme → fact 2; same theme → fact 3

The Tuesday market is the oldest in the region. It sells local cheese and handmade pottery. It also hosts a small music stage.

The Tuesday market / It / It: one theme, with each rheme adding a separate fact about the market.

The city archive holds records from the fourteenth century. It is open to the public on weekdays. It also runs a programme for school groups.

The reader always knows the focus because the archive returns at the beginning of each sentence.

2. What a constant theme looks like and when it works

A constant theme is useful when a writer wants to develop one subject in depth: a place, product, organisation, person, or project. It resembles a portrait: there is one centre, and each sentence reveals another aspect. The paragraph is easy to follow because readers do not have to assemble disconnected facts.

Typical uses include reference entries, museum labels, product descriptions, profiles, reports on one project, and answers about a single subject. It also occurs naturally in conversation: an answer to Tell me about the new bridge sounds coherent when it keeps the bridge as its theme.

How to build it

one entity at the start of successive sentences → new information about it each time

The old ropeworks closed in 1971. It employed nearly three hundred people at its peak. It was later converted into studios for artists.

Each rheme adds new information: closure, workforce size, and a new function.

Marta, the new project lead, trained as a hydrologist. She spent a decade working in river basins. She now manages a team of twelve.

The pronoun she maintains the person as the theme, while each sentence develops the account of her career.

3. Expressing the theme: repetition, pronouns, alternative labels, and ellipsis

There are several ways to return a theme to the start of a sentence. Repeating the noun is the clearest. A pronoun—it, they, he, or she—is shorter and often more natural. An alternative label, such as the scheme → the programme → the initiative, or a general label like the group, adds variety but requires readers to identify the same entity reliably. Within coordinated structures, ellipsis often maintains the theme: the subject is named once and serves two verbs.

The choice depends on genre and distance between references. Noun repetition is perfectly acceptable in a formal report; pronouns dominate conversation. If another sentence or a competing referent intervenes between mentions, repeat the noun when that improves clarity.

How to build it

noun · it/they/he/she · the + alternative label · subject + verb 1 and verb 2

subject / S: The grammatical subject: who or what the clause is about; the verb agrees with it. In The book was written, the book is the subject, although someone else does the action.
verb / V: A word for an action or state, such as work or be. The pattern determines its form.
noun: A word naming a person, thing or idea: student, book, happiness.

The Marlow Press was founded by two printers. The Marlow Press has since published four hundred titles.

Repeating the noun maximises clarity, especially at the beginning of a text or after a digression.

Snow leopards are elusive. They hunt at dusk. They can leap fifteen metres.

They maintains the plural theme; number and agreement must match.

The scheme launched in 2018. The programme has since reached nine towns. The initiative is now funded locally.

Three labels refer clearly to one entity. If a second programme were introduced, this variation could become confusing.

4. A new rheme: a constant theme does not mean constant content

A constant theme helps readers only if the rheme moves the account forward. If every sentence merely repeats the same thought in different words, the grammar may be correct but the paragraph says little: readers wait for development that never arrives.

When reviewing your text, ask what new information each sentence gives the reader. A date, reason, number, consequence, evaluation, or example can all provide a new rheme. Simply saying it is great, it is wonderful, it is excellent does not.

The tower is tall. It is very high. It rises far above the town.

The height assessment is largely repeated, although the final sentence adds a comparison with the town. A short reference description would often benefit from a new fact instead.

The tower is the tallest building in the county. It was finished in 1911. It still has its original clock.

The same theme remains, but each rheme adds a distinct fact.

5. Clear reference: what exactly returns as the theme?

A pronoun is appropriate when its referent is clear. Two mentioned nouns do not always create ambiguity: the predicate's meaning can identify the right one. If doubt remains, repeat the name. Do not infer a person's gender solely from their occupation.

In British English, collective nouns such as team, committee, and board can take either it or they. Within one paragraph, consistency is preferable. The same principle applies to alternative labels: the programme may clearly refer to the scheme, while the project could identify another entity.

The curator showed the artist a new catalogue. The curator had spent a year compiling it.

If both people use the same gendered pronoun, that pronoun could refer to either. Repeating the noun removes the uncertainty.

The engineers tested the pumps on Monday. They found two faults in the older units.

They is understood as the engineers here. To make the pumps the theme, write The pumps.

6. Contrasting chains, branching, and disconnected progression

Related patterns serve other purposes. In linear progression, a rheme becomes the next sentence's theme, developing a chain such as a sequence of causes. With a split rheme, one rheme introduces several components, which become themes in turn. Disconnected progression gives no clear relationship between themes.

A constant theme suits describing one subject from several angles. A chain supports sequential development, including causes and consequences; branching allows several components to be considered. These are useful organisational options, not the only permitted ways to express those meanings.

How to build it

constant theme: one entity → different facts; chain: new information in one sentence → the next sentence's beginning; branching: named components → separate statements about each

The mine closed in 1974. It had employed four hundred people. It now houses a museum.

Constant theme: the mine remains the focus throughout.

The mine closed in 1974. The closure left four hundred people without work. Their unemployment reshaped the village.

A chain: each rheme becomes the next theme, and the account develops through causes and consequences.

The mine closed in 1974. Wages were low in the region. Tourism grew in the nineties.

These facts may concern the region's development, but their connection is not explained here. A clear paragraph should show why the writer moves from the mine to wages and tourism.

7. Limits and balance: monotony, punctuation, and changing the theme

Repeated beginnings can become monotonous, although they sometimes deliberately create rhythm. Vary the labels only when the connection remains clear. In ordinary written prose, join independent clauses with a full stop, semicolon, or conjunction. In that style, Displays work by regional artists without a subject is a fragment; notes and captions can use deliberate compression.

You can intentionally leave a constant theme. Signalling the change with By contrast, As for, or Turning to makes this clearer. Readers then understand that the theme has changed rather than been lost.

The treaty was signed in 1648. However, it was not ratified by every state. It nevertheless ended the war.

However and nevertheless signal contrast. In the third sentence, nevertheless follows it; the main focus is still the same treaty.

The bridge reopened in May. It now carries two lanes of traffic. As for the old ferry, it will stop running in autumn.

As for signals a new theme. In the third sentence, it clearly refers to the ferry rather than the bridge.

Common mistakes

Incorrect:The glass museum opened in 1964. It have displayed work by regional artists ever since.

Correct:The glass museum opened in 1964. It has displayed work by regional artists ever since.

It agrees with has, not have. They can be appropriate for an institution or its staff in a suitable context, so using they alone is not a reliable example of an error.

Incorrect:The glass museum opened in 1964, it displays work by regional artists.

Correct:The glass museum opened in 1964. It displays work by regional artists.

In this prose style, a comma alone cannot join two independent clauses. A full stop or semicolon preserves the theme and corrects the punctuation.

Incorrect:The glass museum opened in 1964. Displays work by regional artists.

Correct:The glass museum opened in 1964. It displays work by regional artists.

Without a subject, the sentence is incomplete. The theme has not been expressed, so it is needed to restore it at the beginning of the sentence.

Incorrect:The ferry timetable changes every spring. It list the summer departures first.

Correct:The ferry timetable changes every spring. It lists the summer departures first.

Singular it requires lists in the Present Simple. The theme is maintained, but the verb must agree.

Sources

Purdue OWL — Paragraphs and Paragraphing

Split-rheme progression: from a shared introduction to separate branches

1. The theme establishes a starting point; the rheme develops the message

In functional analysis, the Theme is the starting point of the message in a clause: the point from which the speaker guides the reader forward. The Rheme is the rest of the clause, where the message about that starting point develops. In a simple declarative sentence, the thematic portion often coincides with the subject, but this is not an absolute rule: textual markers or circumstances can precede it.

Writing depends not only on the structure of one clause but also on how the beginnings of later clauses pick up information already introduced. When readers recognise a familiar element at the beginning of a new clause, they can more easily see the connection between parts of the paragraph.

How to build it

theme — the message’s starting point → rheme — its subsequent content

The review identified two weaknesses.

The review establishes the starting point; identified two weaknesses says something new about it. The phrase two weaknesses alone does not yet name the future branches.

In the final section, the review identifies two weaknesses.

The initial circumstance In the final section is a marked thematic element; Theme should therefore not be mechanically equated with the grammatical subject alone.

2. A split rheme creates a branching plan

In split-rheme progression, the rheme of one clause contains several distinct elements. Each later becomes the thematic starting point of another clause. The basic teaching model has two branches, X and Y, but real texts can have more if readers can comfortably keep track of the list.

The opening clause acts as a brief map of the paragraph. Subsequent clauses do more than mention the same words: they add information about each announced branch. If a writer announces two causes but explains only one before moving to a third topic, the English sentences may remain grammatical, but the promised progression is not fulfilled.

How to build it

The first sentence names components X and Y; the next develops X, and another develops Y.

The pilot revealed two obstacles: unreliable audio and confusing navigation. Unreliable audio interrupted calls. Confusing navigation slowed new users.

The first clause’s rheme names X and Y; each subsequent clause begins with the corresponding branch and develops it.

The pilot revealed two obstacles: unreliable audio and confusing navigation. Unreliable audio interrupted calls. The launch date was also discussed.

The text is grammatical, but navigation does not become the theme of a subsequent clause. This breaks the specified organisational plan; it does not make the final sentence ungrammatical.

3. The introduction must identify genuinely distinct branches

Readers should be able to identify the elements to be developed without guessing. A colon, constructions such as two factors, both X and Y or a combination of X and Y, and a numbered list can help. These signals are optional, but they make the plan clear. Both alone does not create progression if no branches follow.

The branches must be distinct enough for something new to be said about each. Vague pairs such as quality and good results force readers to decide whether these are two ideas or the same one. In practice texts, announce parallel categories such as cost and access, internal and external causes, or speed and accuracy.

Two constraints shaped the decision: cost and access. Cost limited the scale of the service. Access determined who could use it.

The number, colon and two parallel noun phrases clearly establish two branches.

Both internal and external pressures affected retention. Internally, unclear roles weakened trust. Externally, competitors offered higher salaries.

The branches are picked up by the adverbs Internally and Externally rather than word-for-word repetition; the connection remains clear.

4. A branch can be picked up through repetition, a synonym or a precise reference

The simplest way to open a branch is to repeat the named element: Staff shortages … Equipment failures …. To avoid monotony, use a clear synonym, a broader category with a qualifier, or a reference such as the first issue / the second option. A pronoun is appropriate only when its referent is unambiguous.

Lexical variation should not hide the paragraph’s map. If the introduction names remote work and compressed hours, an opening such as This approach could refer to either branch unless clarified. The remote option or Remote work is clearer.

The redesign has two priorities: accessibility and speed. Accessibility matters to keyboard users. Performance, meanwhile, matters on older devices.

Performance is a clear contextual paraphrase of speed; meanwhile signals the move to the second branch.

The committee considered remote work and compressed hours. The former could widen recruitment. The latter would require new scheduling rules.

The former and the latter are unambiguous for this pair, but direct names are often easier to read in a long or complex paragraph.

5. Branches develop in parallel but need not be identical

Parallelism means comparable functions: each branch receives sufficient explanation, evidence, consequences or examples. Exactly equal numbers of words or sentences are unnecessary. What matters is that differences in length reflect the content rather than accidentally losing the second branch.

The branches usually follow the order of their introduction because that demands less effort from readers. You can change the order if markers make the transition clear. A concluding sentence can bring the branches together, compare them or state a shared consequence; this is a useful but optional fourth step.

The inquiry examined two causes: weak oversight and fragmented data. Weak oversight allowed errors to persist. Fragmented data made those errors difficult to detect. Together, the two causes delayed corrective action.

After two separate branches, Together brings them back into a shared conclusion.

The scheme offers speed and flexibility. Flexibility is most valuable to small teams. Speed, by contrast, matters during emergencies.

The Y → X order differs from the introduction, but the explicit names and by contrast remove ambiguity.

6. Distinguish branching from a chain or a constant theme

In linear progression, a new element in one clause’s rheme becomes the theme of the immediately following clause, whose rheme supplies the next link: A → B, B → C. In constant-theme progression, several clauses return to the same original theme. In split-rheme progression, one initial rheme prepares several subsequent thematic branches at once.

Natural texts can mix these patterns. After opening a branch, a writer may keep it as a constant theme for several sentences or use it to begin a new chain. A split-rheme exercise primarily checks for an introduction and a recognisable continuation of every branch, rather than prohibiting other cohesive devices.

The team launched a portal. The portal generated new data. The data exposed regional gaps.

This is a linear chain: each new theme comes from the preceding rheme, but the initial rheme does not split into parallel branches.

The portal serves rural clinics. The portal also supports mobile teams. The portal now handles referrals.

This is a constant theme: The portal repeats, and there is no separate introduction announcing future branches.

7. Editing check: introduction, continuation and new information

When editing, mark three layers. First underline the elements the rheme announces as a plan. Then circle the opening of each later clause that picks up those elements. Finally, check that each branch adds new information rather than merely repeating its name.

In your own text, you can develop two or three branches, change their order and use different ways of referring back. The model is not the only acceptable wording. Assess sentence grammar, clarity of reference, completeness of the branches and suitability for the genre separately.

The consultation produced three recommendations: clearer guidance, earlier feedback and simpler forms. Clearer guidance would reduce uncertainty. Earlier feedback would prevent late revisions. Simpler forms would lower the administrative burden.

Three branches are manageable because they are explicitly introduced, taken up in the same order and developed through parallel consequences.

The consultation produced clearer guidance, earlier feedback and simpler forms.

The individual sentence is grammatical and natural, but without subsequent development it is not yet split-rheme progression.

Common mistakes

Incorrect:The review identified two weaknesses: poor documentation and slow testing. Poor documentation make audits difficult.

Correct:The review identified two weaknesses: poor documentation and slow testing. Poor documentation makes audits difficult.

Uncountable documentation takes singular agreement, so the present simple requires makes. This correction only fixes subject–verb agreement.

Incorrect:The policy has two effects: lower emissions and cleaner air. Lower emissions is already visible in the latest data.

Correct:The policy has two effects: lower emissions and cleaner air. Lower emissions are already visible in the latest data.

The head noun emissions is plural, so use are. This is a grammar error in the first branch, not a judgement of the entire paragraph pattern.

Incorrect:Two options remain: remote work and compressed hours. The compressed-hours option require further negotiation.

Correct:Two options remain: remote work and compressed hours. The compressed-hours option requires further negotiation.

The subject The compressed-hours option is singular, so the verb takes the form requires.

Sources

A multimodal discourse analysis of the textual and logical relations in marketing texts written by international undergraduate students

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