What is the Past Perfect?
The past perfect describes an action that happened before another past action.
When I arrived, the film had already started.
Timeline: film started → I arrived (both in the past, but the film started earlier)
How to Form the Past Perfect
had + past participle
| Subject | Form | Example |
|---|---|---|
| I / you / he / she / it / we / they | had + past participle | She had eaten before we arrived. |
Negative: had not (hadn't) + past participle
He hadn't finished his homework when the teacher asked.
Question: Had + subject + past participle?
Had you ever visited France before last year?
Common Past Participles
| Infinitive | Past participle |
|---|---|
| eat | eaten |
| go | gone |
| see | seen |
| write | written |
| take | taken |
| finish | finished |
| arrive | arrived |
Useful Signal Words
The past perfect is often used with:
- before: She had left before he called.
- after: After they had eaten, they watched TV.
- when: When I got home, my parents had already eaten.
- never: I had never seen snow before that winter.
- by the time: By the time we arrived, the party had finished.
When the order of events is already clear from before or after, you can sometimes use past simple instead. But when the order is unclear, the past perfect removes ambiguity.
Real world: detective story / crime report
When police arrived at the scene, the suspect had already escaped through a back window. He had taken the documents and had destroyed the evidence.
Real world: personal story
By the time I got to the airport, my flight had already departed. I hadn't checked the time correctly. Luckily, I had booked travel insurance.
Practice Problems
Which happened first? 'When he arrived, she had already left.'
Show answer
Complete: 'By the time the ambulance arrived, the fire __ (extinguish).'
Show answer
Make it negative: 'I had finished my homework.' (had not)