`1` have been (dấu hiệu : for many years now) 

`2` have taken up 

`3` was

`4` have tried (dấu hiệu : the first time) 

`5` slipped 

`6` broke

`7` haven't had (dấu hiệu : since then) 

`8` tried (dấu hiệu : last year) 

`9` have slipped 

`10` didn't broken 

`11` took (dấu hiệu : two years ago) 

`12` didn't like

`13` found

`14` haven't played (dấu hiệu : yet) 

`@` Thì Quá Khứ Đơn : 

Động từ tobe : I/he/she/it chia was , we/you/they chia were

`+)` S + was/were + ... 

`-)` S + was/were + not + ... 

`?)` Was/were + S + .... ? 

Động từ thường : 

`+)` S + Ved/V2 + O 

`-)` S + didn't + V nguyên + O 

`?)` Did + S + V nguyên + O ? 

`1.` have been

`2.` have taken up 

`3.` was

`4.` have tried

`5.` slipped

`6.` broke

`7.` haven't had

`8.` tried

`9.` have slipped

`10.` didn't broken 

`11.` took

`12` didn't like

`13.` found

`14.` haven't played

____________________________

`+` Cấu trúc:

`-` Thì Hiện tại hoàn thành:

`(+)` Khẳng định: S + have/has + Ved/V3

`(-)` Phủ định: S + have/has + not + Ved/V3

`(?)` Nghi Vấn: Have/has + S + Ved/V3....?

`-` thì Quá khứ đơn:

`(+)` Khẳng định: S + Ved/V2

`(-)` Phủ định: S + didn't + V_inf

`(?)` Nghi Vấn: Did + S + V_inf...?