Look at these examples to see how the past perfect is used.
He couldn't make a sandwich because he'd forgotten to buy bread.
The hotel was full, so I was glad that we'd booked in advance.
My new job wasn't exactly what I’d expected.
Try this exercise to test your grammar.
- Grammar test 1
Read the explanation to learn more.
Grammar explanation
Time up to a point in the past
We use the past perfect simple (had + past participle) to talk about time up to a certain point in the past.
She'd published her first poem by the time she was eight.
We'd finished all the water before we were halfway up the mountain.
Had the parcel arrived when you called yesterday?
Past perfect for the earlier of two past actions
We can use the past perfect to show the order of two past events. The past perfect shows the earlier action and the past simple shows the later action.
When the police arrived, the thief had escaped.
It doesn't matter in which order we say the two events. The following sentence has the same meaning.
The thief had escaped when the police arrived.
Note that if there's only a single event, we don't use the past perfect, even if it happened a long time ago.
The Romans spoke Latin. (NOT
The Romans had spoken Latin.)
Past perfect after before
We can also use before + past perfect to show that an action was not done or was incomplete when the past simple action happened.
They left before I'd spoken to them.
Sadly, the author died before he'd finished the series.
Adverbs
We often use the adverbs already (= 'before the specified time'), still (= as previously), just (= 'a very short time before the specified time'), ever (= 'at any time before the specified time') or never (= 'at no time before the specified time') with the past perfect.
I called his office but he'd already left.
It still hadn't rained at the beginning of May.
I went to visit her when she'd just moved to Berlin.
It was the most beautiful photo I'd ever seen.
Had you ever visited London when you moved there?
I'd never met anyone from California before I met Jim.
Do this exercise to test your grammar again.
- Grammar test 2
Hello kingson
Yes, it is possible -- the verb forms in the sentence you cite have no grammatical errors. 'evidences' is not correct, however: it is an uncount noun.
All the best
Kirk
The LearnEnglish Team
Hello Raj,
Your examples use the past perfect, not the present perfect.
The second example looks fine. The first example does not make sense. We use the past perfect to describe actions in the past which happened before another action in the past. In your second example the sequence is reversed: 1940 is after the 1920s, not before.
Peter
The LearnEnglish Team
Hello Raj,
As it is written, the first example does not appear logical. It may be that in context there is another past time reference point, but we cannot see this in the sentence.
Peter
The LearnEnglish Team
Hello Reza,
Yes, that sentence is perfectly fine. Well done!
Peter
The LearnEnglish Team
Hello kingson,
Unless there is a second past time reference point in another sentence in the wider context, there is no need to use the past perfect in the first sentence. A past simple is fine:
In your second sentence is is required. We would usually put now after it:
Peter
The LearnEnglish Team