` #Ska009`

Cấu trúc thì hiện tại hoàn thành :

( + ) : S + have / has + V3

( - ) : S + have / has + not + V3

( - ) : Have / Has + S + V3 ?

- Dấu hiệu thường gặp : Yet , since , for , already , just . so far , ...

Cấu trúc thì quá khứ đơn với động từ thường 

( + ) : S + V-ed / V2

( - ) : S + didn't + V nguyên mẫu

( ? ) : Did + S + V nguyên mẫu ?

Cấu trúc thì quá khứ đơn tobe

( + ) : S + was / were + ...

( - ) : S + was / were + not + ...

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

- I / He / she / it / chủ ngữ số ít + was + ( not ) + ...

- You / we / they / Chủ ngữ số nhiều + were + ( not ) + ...

- Dấu hiệu : yesterday , last night , last year , in the past , ...

` 1 ` : Have you chosen - bought

` 2 ` : Has - tried

` 3 ` : Did - go

` 4 ` : have already left

` 5 ` : Did - watch

` 6 ` : have been

` 7 ` : have travelled

` 8 ` : Have you ever met - sat

` 9 ` : has been - died

` 10` have known - died

`1.` Have/ chosen - bought

`2.` Has/ tried

`3.` Did/ go

`4.` have/ left

`5.` Did/ watch

`6.` have been

`7.` have travelled

`8.` Have you ever met - sat

`9.` has been/ died

`10.` have known - died 

`-` Cấu trúc:

`->` Thì QKĐ (Động từ thường)

`(+)` S + V2/ ed + O

`(-)` S + didn't + Vinf...

`(?)` Did + S + Vinf..?

`-` DHNB: yesterday, ago, last, in,...

`->` Thì HTHT:

`(+)` S + have/ has + VpII

`(-)` S + have/ has + not + VpII

`(?)` Have/ Has + S + VpII...?

`-` DHNB: since, for, yet, already, so far,...

`-` He/ She/ It.. + has

`-` I/ We/ You/ They.. + have