Upper-Intermediate Unit 3
Upper-Intermediate · Grammar Reference
Unit 3 — Narrative Tenses
past simple · past continuous · past perfect · time clauses
3.1  Narrative tenses

The Past Simple differs from all three uses of the Present Perfect.

Past Simple
Past Continuous

The Past Continuous is used:

📌 Note
The Past Simple expresses past actions as simple, complete facts. The Past Continuous gives past activities' time and duration.
Past Perfect

The Past Perfect is used when we look back to a time in the past and refer to an action that happened before then.

Keith was fed up. He'd been looking for a job for months, but he'd found nothing.
📌 Note
The continuous refers to longer actions or repeated activities. The simple refers to shorter, complete facts.
The Past Perfect can refer to definite as well as indefinite time.
Past Perfect and Past Simple

Verbs in the Past Simple tell a story in chronological order.

By using the Past Perfect, the speaker or writer can tell a story in a different order.

📌 Note
For reasons of style, it is not necessary to have every verb in the Past Perfect. Once the time of 'past in the past' has been established, the Past Simple can be used as long as there is no ambiguity.
3.2  Time clauses
📌 Note
See Unit 11 for information on the Past Perfect used for hypothesis: I wish I had known