The past continuous (also called the past progressive), as defined in the Cambridge Grammar, describes an action that was happening at a specific time in the past. Rather than presenting the action as complete, it shows it in the middle of unfolding: This time yesterday, we were driving to the coast. We form it with was/were plus the -ing form of the main verb.
This tense is essential for storytelling and description. It sets the background scene, shows two actions happening at the same time, and — most importantly — pairs with the past simple to show a longer action interrupted by a shorter one.
Form of the Past Continuous
Use was with I/he/she/it and were with you/we/they, followed by the -ing form.
| Type | Structure | Example |
|---|---|---|
| Affirmative | subject + was/were + -ing | She was reading. |
| Negative | subject + was/were not + -ing | They weren't listening. |
| Question | was/were + subject + -ing | Were you sleeping? |
When We Use It
| Use | Example |
|---|---|
| Action in progress at a past time | At midnight, I was still working. |
| Interrupted action | I was cooking when the phone rang. |
| Two actions at the same time | She was cooking while he was cleaning. |
| Background description in a story | The sun was shining and birds were singing. |
Past Continuous and Past Simple Together
The most common pattern joins the two tenses with when or while. The past continuous shows the longer, background action; the past simple shows the shorter action that interrupts it.
- I was watching TV when the lights went out.
- While we were having dinner, someone knocked at the door.
When vs while: Use when before the past simple (the short action): when the phone rang. Use while before the past continuous (the long action): while I was sleeping. Both link the two tenses, but they attach to different clauses.
Past Continuous vs Past Simple
The contrast is about completion. The past simple presents a finished action; the past continuous presents an action in progress, with no clear start or end shown.
| Past continuous (in progress) | Past simple (completed) |
|---|---|
I was reading at 9 p.m. (in the middle of it) |
I read a book yesterday. (finished) |
When she called, I was eating. |
When she called, I ate quickly. (after the call) |
Stative Verbs
As with all continuous tenses, avoid stative verbs such as know, want, believe and own. Use the past simple instead: say I knew the answer, not I was knowing the answer.
Common Mistakes
- Wrong form of be: We
waswere watching. Use were with we/you/they. - Using it for habits: for repeated past habits use the past simple or used to, not the past continuous.
- Stative verbs: say I wanted, not I was wanting.
- Mixing up when/while: while goes with the longer (continuous) action, when with the shorter (simple) one.
Practice Exercises
Grammar Quiz
Choose between the past continuous and past simple.
Cloze Dropdown
Select when or while and the right verb form.
Complete the Sentence
Type was/were + -ing in each gap.
Matching Pairs
Match background actions with the events that interrupt them.
Unjumble
Reorder words into correct past continuous sentences.
Flash Cards
Drill time expressions and verb forms for this tense.
Master English Tenses
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Frequently Asked Questions
What is the past continuous?
The past continuous (or past progressive) describes an action that was in progress at a specific time in the past: At 8 p.m. I was cooking dinner. It shows the action unfolding rather than finished, and we form it with was/were + the -ing form of the verb.
How do I form the past continuous?
Use was/were + verb-ing. Use was with I/he/she/it and were with you/we/they: She was reading; They were playing. For negatives add not (wasn't/weren't); for questions invert: Were you sleeping?
When do I use the past continuous with the past simple?
Use them together to show a longer action interrupted by a shorter one. The past continuous is the background action; the past simple is the interruption: I was watching TV when the lights went out. Join them with when (before the simple) or while (before the continuous).
What is the difference between the past continuous and the past simple?
The past simple presents a completed action: I read a book yesterday. The past continuous presents an action in progress, without showing its start or end: I was reading at 9 p.m. Use the simple for finished events, the continuous for actions caught in the middle.
What is the difference between 'when' and 'while'?
Use when before the short, completed action in the past simple: when the phone rang. Use while before the longer action in the past continuous: while I was sleeping. Both link the two tenses, but they attach to different clauses.
Can the past continuous show two actions at once?
Yes. To show two ongoing actions happening at the same past moment, use the past continuous in both clauses, often joined by while: She was cooking while he was cleaning. This stresses that both activities were in progress simultaneously.
Why is the past continuous used to set a scene?
Because it describes ongoing background activity rather than single events, it is ideal for painting a scene at the start of a story: The sun was shining and the birds were singing. The past simple then introduces the main events that move the story forward.
Can I use stative verbs in the past continuous?
Normally no. Stative verbs such as know, want, believe and own are not used in continuous forms. Use the past simple instead: say I knew the answer and I wanted to leave, not I was knowing or I was wanting.
How do I make the past continuous negative?
Put not after was/were: I wasn't listening; They weren't working. The full forms are was not and were not, usually contracted to wasn't and weren't in speech and informal writing.
Is the past continuous used for past habits?
No. For repeated actions or habits in the past, use the past simple or used to: I played football every weekend / I used to play football. The past continuous is for a single action in progress at a particular moment, not for routines.