Phrasal Verbs: Separable vs Inseparable

If the object is a noun or noun phrase, a separable verb permits two grammatical orders. The object can separate the verb and particle or follow the particle.

Both orders usually express the same basic meaning. Therefore, turn the radio down and turn down the radio must not be presented as a “correct / incorrect” pair.

When a noun object is replaced by the personal pronoun me, you, him, her, it, us or them, there is no longer a choice of position. Put the pronoun between the verb and the particle.

That is why turn it off is grammatical and turn off it is not. This is the central diagnostic feature of this rule.

The same particle does not guarantee the same word order. Know the specific combination and its meaning: pick up “collect”, hand in “submit”, turn down “reject / reduce”, write down “record in writing”.

Do not automatically extend this pattern to look after, come across, get up or three-part verbs. Those belong to related rules and can have a different structure.

The particle stays the same, while the first part changes according to tense and construction: pick up, picked up, will pick up, can pick up. The object still takes the position required for a noun or pronoun.

Time and place expressions do not break up the relationship between verb, object and particle. First build the core picked them up, then add at eight or from the station.

Both positions for a noun object are grammatical, but a long or complex phrase often sounds more natural after the complete phrasal verb. This helps the listener recognise the verb as a unit sooner.

This is a stylistic and processing preference, rather than a new prohibition. Do not label a grammatical separated order an error merely because the object is long.

When forming your own answer, first choose a familiar phrasal verb for the meaning you need. Then identify its direct object: a full noun phrase or a pronoun.

A useful self-check: if you see it or them after the particle of a known separable verb, move the pronoun between the parts. For a noun object, consider both orders and choose the one that best suits the context.

When a noun is replaced by a pronoun such as me, you, him, her, it, us, or them, its position does not change: the pronoun still comes after the particle. This is the main difference from separable verbs, where the pronoun must go inside.

With the meanings shown here, the correct forms are run into them — “meet them by chance,” get over it — “recover from it,” and look after her — “take care of her.” Get it over can have a different meaning, for example “finish it”; it does not replace get over it in the meaning “recover.”

The particle itself does not show which class the verb belongs to: after, on, off, or up can occur in both types. Therefore, learn an inseparable verb together with its meaning and a typical example, not from its appearance.

Separable verbs (turn off, pick up, write down) allow a noun object in two positions, while a pronoun goes inside; this is covered by the neighboring rule. Verbs with two particles, such as look forward to, have their own rule, and they also end with the object after the last particle.

The same verb root can have different meanings with different particles: look for — “search for,” look after — “take care of,” look into — “investigate,” look at — “look at.” Replacing the particle changes the meaning, not just the sound.

Context helps you choose the meaning: ran into somebody — meet somebody by chance, take after a parent — resemble that parent, go through a report — check it carefully.

In different tenses, negative statements, and questions, only the first part changes: looks, looked, is looking, has got over, did not come across. The particle stays in place, and the object comes after it.

In a subject question, we do not add do/did just to form a question: Who looks after the baby? Other auxiliary verbs remain when the form requires them: Who has been looking after the baby? In an object question, the question word can move to the front: What are you waiting for? — “What are you waiting for?”

A long object also comes after the preposition: look after the children of our new neighbours. An adverbial of time or place often comes at the end, but it can also begin the sentence: On Friday, we looked into the problem.

A useful framework is verb + particle/preposition + object, that is, “verb + particle/preposition + object.” This is the core of the sentence, not a ban on other natural positions for adverbials.

When you speak in your own words, first choose the meaning: meeting by chance, taking care of someone, investigating, or resembling someone. Then insert the appropriate two-word unit and add the object after the particle.

Check that you have not put the object inside: look her after → look after her. An adverb inside the expression is not necessarily an error. If you are unsure, check the specific meaning and an example of the construction in a dictionary.

With separable two-word verbs, a noun object can go in the middle: turn the radio off. With look forward to, come up with, keep up with and the other patterns in this lesson, the object follows the final preposition.

In ordinary statements with these meanings, the order is verb, particle, preposition, object. Questions and relative clauses are covered separately below; adverbs can also occupy other positions.

With separable two-word verbs, a pronoun must go in the middle: turn it off. With the three-part verbs here, the opposite pattern applies: a pronoun occupies the same position as a noun, after the whole expression.

Keep the order of the particular inseparable expression when replacing a noun with a pronoun: look forward to the trip → look forward to it. Do not decide the order simply because you see three words.

Tense, person and verb form are expressed through the first word: runs, ran, running, run. The particles and preposition remain unchanged. An auxiliary forms negatives and questions, while the expression stays together.

After can’t, must and other modal verbs, the first word is in the base form. Infinitival to also introduces the base form: to catch up with. Do not confuse it with the preposition to at the end of look forward to: that to can be followed by an -ing form.

The last element in these expressions is a preposition. A preposition is followed by a noun, pronoun or -ing form, not by a verb in its base form. Therefore a verb following look forward to or cut down on needs -ing: this to is not an infinitive marker.

It is easy to mistake to for the infinitive marker because they look identical. In this expression, however, to is the final preposition.

In a question with What or Who, the object moves to the beginning, but the expression is not split: the preposition remains at the end. A construction with the preposition at the front, such as To what ...?, sounds very formal and is rarely used in conversation.

The same pattern occurs in relative clauses when the object is represented at the front: the plan we came up with.

The object is never inserted into these inseparable expressions, but a short adverb may go before them, as in really look up to, or inside some combinations, as in get on well with and get along fine with. This does not make the verb separable: the adverb is not the object, and the object still follows the final preposition.

To avoid errors, use an established adverb position before the verb, and place an adverb inside the expression only when you know that particular pattern.

Separable two-word verbs, such as turn it off, and inseparable two-word verbs, such as look after the children, have their own rules. Here we focus only on verbs followed by two elements; the other types appear just for comparison.

When speaking, connect each expression with a situation: what you have run out of, what you tolerate, what you look forward to or whom you respect. This helps you remember the whole expression together with its meaning.