1.When I am reached the station, the train had already left

2.As soon as the children had finished their breakfast, they had ran out to play.

3.The sun had setted before I was ready to go.

4.He had learnt a lot of English before he went to England.

5.He thanked me for what I had done for his parents.

6.When we came many guests had arrived.

Gỉải thích:

Câu khẳng định:

Subject + helping verb + main verb + object

subject+ had + main verb (in past participle form) + object

VD: Farah had completed her homework.

In case of two events one happening after the other:

Subject + helping verb + (event 1) main verb (past participle form) + link + object + (event 2) main verb (in simple past form)

Câu nghi vấn

Helping verb + subject + main verb + object

Have/has + subject + participle form of main verb + object

Example: Had Farah completed her homework?

Câu phủ định:

Subject + helping verb + NOT – main verb + object

Subject + had NOT + participle form of main verb = object

Example: Farah had not completed her homework.