1. Two questions to ask about a story
What was happening then? This helps us picture the scene. What happened? This highlights an event. Past Continuous often answers the first question, and Past Simple the second. This organises a narrative; it does not mean every background detail must use Continuous.
The background need not be unimportant. The narrator simply does not present it as the next completed step. A story can contain several background details and a chain of main events.
People were chatting near the entrance. A woman walked in and handed me a parcel.
People were chatting near the entrance. A woman walked in and handed me a parcel.
Were chatting shows a process within the scene; walked in and handed are two successive narrative steps.
The hall was cold. I closed the window.
The hall was cold. I closed the window.
Was describes a background state in Past Simple. Closed names an action; these two sentences do not explicitly state a causal link.
2. The process form, negatives and questions
For a past process, use was with I/he/she/it and were with you/we/they, followed by the -ing form. Put negative not after was/were. In a question, was/were moves before the subject.
For a main event, use Past Simple when presenting it as a whole fact. In a negative or question with did, the main verb takes its base form: didn’t notice, Did she notice?
Background process: subject + was/were + V-ing | Negative: was/were not + V-ing | Question: Was/Were + subject + V-ing?
- 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.
- V-ing / -ing —
- The verb form ending in -ing: working, going. Its role depends on the construction.
We weren't using the lift when it stopped.
We weren't using the lift when it stopped.
The negative applies to using the lift at that moment, rather than to the lift stopping.
What was the technician checking when you arrived?
What was the technician checking when you arrived?
Was comes before the technician; checking names the process. Arrived keeps the arrival as a separate event.
3. The main event need not stop the background process
A separate event can happen during a process without physically interrupting it. Do not infer that everything stopped afterwards unless the story says so.
When and while help connect the timing of events, but do not automatically choose the grammatical tense. First identify what was happening, then decide how to present it.
The band was playing when I took the photo. They carried on playing afterwards.
The band was playing when I took the photo. They carried on playing afterwards.
Took is a separate event within a longer process. The music does not stop.
While I was reading, Dan was making lunch.
While I was reading, Dan was making lunch.
Two processes are shown as simultaneous. There is no need to turn one artificially into a completed main event.
4. Background can use Past Simple
Descriptions of location, age, knowledge, needs or other states often use Past Simple: was, knew, needed. A background role does not turn a state verb into a process. State verbs usually do not take Continuous in their ordinary meaning.
Even with an action, an author may sometimes choose either tense. It rained and The sun shone are grammatical: they present the weather as a fact or whole description. Was raining and was shining focus on its progress at a particular moment.
I knew the area well. A narrow path led to the station.
I knew the area well. A narrow path led to the station.
Knew and led create background without a Continuous form.
It rained all afternoon. / It was raining when I left the office.
It rained all afternoon. / It was raining when I left the office.
The first sentence sums up a period; the second shows the weather at the moment of leaving. The first is not incorrect.
5. The viewpoint depends on the narrator
Past Simple can present a long action as a whole, and Past Continuous can show a short event unfolding. Duration measured in seconds does not by itself determine the tense. Even was happening is possible when the speaker pictures an event in progress, for example when analysing accident footage.
A temporary situation or repeated actions during a limited period can also be background in Continuous. This is not always one uninterrupted action. An ordinary summary of the same period can use Past Simple.
That month, we were working late most evenings. One Friday, the manager brought us dinner.
That month, we were working late most evenings. One Friday, the manager brought us dinner.
Were working describes a temporary repeated routine; brought describes one specific occasion.
The accident was happening right in front of the camera, but the operator was looking away.
The accident was happening right in front of the camera, but the operator was looking away.
A view inside the unfolding event makes was happening possible. If simply reporting the accident as a fact, The accident happened is natural.
6. Connect only known facts
Two separate facts do not prove they happened at the same time or that one caused the other. Combining them with while or when requires a known time relationship. Because and so add causality: do not insert it without a basis.
A plan for a short narrative: set the scene, name one event, then add the next step. In self-review, distinguish an error of form from another possible viewpoint. If an exercise explicitly requests a process view, a grammatical Past Simple summary may miss its goal without becoming ungrammatical.
At ten, I was checking the tickets. At that moment, the driver called me.
At ten, I was checking the tickets. At that moment, the driver called me.
At that moment explicitly establishes simultaneity, so I was checking the tickets when the driver called me is possible.
It rained on Tuesday. The train was delayed on Wednesday.
It rained on Tuesday. The train was delayed on Wednesday.
The different days are preserved. Without new facts, you cannot make the rain simultaneous with the delay or its cause.
Common mistakes
Incorrect:She were reading when I entered.
Correct:She was reading when I entered.
She needs was. This is an agreement error, rather than a choice of scene.
Incorrect:They were discuss the plan when the lights went out.
Correct:They were discussing the plan when the lights went out.
In Continuous, were needs an -ing form after it, rather than discuss.
Incorrect:Did the driver stopped while you were waiting?
Correct:Did the driver stop while you were waiting?
Did already expresses the past, so the main verb takes the form stop.
Incorrect:I wasn't listened when she called my name.
Correct:I wasn't listening when she called my name.
A negative process uses wasn’t + listening. Listened does not form the required active construction here.