`1.` got

`2.` had bought

`-` QKHT : S + had + V3/ed + O

`3.` was running

`-` QKTD : S + was/were + V-ing + O

`4.` did say

`5.` was not had (didn't have)

`6.` was working

`7.` had not seen

`-` QKHT : S + had + not + V3/ed + O

`– ` QKĐ:

To be:

`(+)` S + was/ were + O

`(-)` S + was/ were + not + O

`(?)` Was/ Were + S +...?

`–` S `=>` I/ He/ She/ It/ Danh từ số ít + was

`–` S `=>` We/ You/ They/ Danh từ số nhiều + were

Verb : 

`(+)` S + V-ed/ V2 + O

`(-)` S + did not + V-inf + O

`(?)` Did + S + V-inf +...?

`-` Diễn tả một hành động, sự việc đã diễn ra tại một thời điểm cụ thể, hoặc một khoảng thời gian trong quá khứ và đã kết thúc hoàn toàn ở quá khứ.

`-` Diễn tả một hành động lặp đi lặp lại trong quá khứ.

`-` Diễn đạt các hành động xảy ra liên tiếp trong quá khứ.

1.They got to the airport as the plane was landing.

2.She wore the shoes she had bought the previous day.

3.I fell as I was running for the bus.

4.What did she say when he asked her to marry him?

5.When I was a student, I did not have much money.

6.Why was she still working at one o'clock in the morning?

7.I was happy to see her, because we had not seen each other for years.

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Công thức:

Quá khứ đơn: S + V-ed/2

Quá khứ hoàn thành: S + had + V-ed/3

Quá khứ tiếp diễn: S + was/were + V-ing

Quá khứ đơn (câu hỏi): Did + S + V?

Quá khứ đơn (phủ định): S + did not/didn't + V

Quá khứ tiếp diễn: Was/Were + S + V-ing?

Quá khứ hoàn thành: S + had + not + V-ed/3

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