First, let's see how we use the past perfect.
1. We use the past perfect to emphasize what action or event happened first.
- I had eaten when they came.
(1st – I ate; 2nd – They came) - She couldn't sleep because she had watched a scary movie.
(1st- Watched movie 2nd - She couldn't sleep)
- I had eaten when they came.
- I ate before they came.
- They came after I ate.
- She couldn't sleep because she had watched a scary movie.
- She couldn't sleep because she watched a scary movie.
- She watched a scary movie, so she couldn't sleep.
- She couldn't sleep after she watched a scary movie.
- I arrived when it started to rain.
(Which happened first? Did they happen at the same time?)
- I had arrived when it started to rain.
(1st – I arrived; 2nd – Rain) - I arrived when it had started to rain.
(1st – Rain; 2nd – I arrived)
- He had finished all his work before 5 o'clock.
- They had already gotten married by the time I met her.
- I had fallen asleep before the movie started.
- He said that he had been there many times.
- Our boss asked us if we had finished our work.
- I wish I had studied English when I was young.
- They wish they had not broken up.
It is very easy to make the past perfect if you already know the present perfect. All you need to do is change the verbs "have/has" to the past tense which is "had".
Subject + had + past participle…
The past participles are exactly the same as the present perfect.
- I had met her one time before you introduced us at the party.
- The train had left by the time we got to the station.
- She had written the report before she heard that information.
- I had never met him before the party.
- She had not finished by the time they came.
- They hadn't visited us for 5 years, but they are here now.
Had + subject + past participle…?
- Had you met her before the conference?
- Had he been here when we arrived?
- Had he already finished when we were still planning?
Question Words + had + subject + past participle…?
- What had he studied before he graduated?
- Where had he gone before he came home?
- Where had she worked before she joined our company?
I had → I'd | I would → I'd |
She had → She'd | She would → She'd |
But we can tell the difference easily. "Had" is followed by a past participle and "would" is followed by a regular verb.
- I'd finished my work before 8.
(=I had finished my work before 8.) - I'd go if I could.
(=I would go if I could.)