When is the past perfect tense used in English? What are its main features?

Indicates an action or state of existence that has been completed before a certain time in the past, and generally has a clear temporal adverbial or can be seen from the context. It is mostly used in indirect speech.

These two tenses are easily confused by students.

raids, because the actions they describe are all in the past. So how do we distinguish between them?

The main difference between them is that the past tense generally only appears in one table of past time, while the past perfect tense should have two tables of past time or action!

1.The simple past tense indicates that the speaker is concerned about the "time" when a certain action took place in the past, so there is often a table of past time! For example, two days ago, last week, yesterday, etc.

he came here two years ago.

we played basketball last week.

2.The past perfect tense mainly reflects the difference in the sequence of the two actions that occurred in the past, expressing the "past past", that is, it is more "past" than a certain action that happened in the past, and the first of the two actions is used in the past perfect tense, and the latter is only in the ordinary past tense. Sentences using the past perfect tense often have two past times or actions, so be sure to pay attention to this!

mr green had lived in new york for ten years before he came to china.(""China has passed, and the previous "living" in New York is even more in the past! )

we had learned 1000 words by the end of last term.

In general, in the past.

Bai is mainly a station.

From the perspective of the present, it tells about a thing that happened in the past, and the past perfect tense is to stand at a certain point in time in the past to describe what happened before that. For example, if we say that something happened last year, this is in the simple past tense, while if we say that something happened in the month before March of the last year, we will use the past perfect tense if we use the last March as the point of analysis.

The strong tone action in the past tense takes place in the past du, and there is an obvious zhi to indicate the past time adverbial.

He went to shanghai last year, the past perfect tense, dao indicates that the action has happened in the past.

Answer: the film had been over when I got there

Had been over occurs before the action of got which signifies the past

First of all, if there is yesterday or other at the end of the sentence, it is in the past tense, and the past perfect tense appears in the form of been down, such as: she is been did homework