`-` S + haven't / hasn't + VpII + for time / since timeline : Không làm gì

`-` S + last + Ved / V2 + time : Lần cuối làm gì

`-` It + is / has been + time + since + S + last + Ved / V2 : Đã bao lâu ... kể từ khi ...

`11 , 12`.We haven't contacted for `3` months

`13`.He hasn't sent me postcards for `2` days

`14`.They last visited their hometown `5` years ago

`15`.I last saw my brother many years ago

`16`.We were last taken to the zoo `3` months ago

`\rightarrow` BĐ `-` QKĐ : S + was / were + VpII ( by O )

`17`.She hasn't sent me letters since last year

`18`.It's ages since she last phoned her parents 

`\text{# TF}`

11. We haven't contacted for 3 months.

12. We haven't contacted for 3 months.

13. He hasn't sent me postcardsfor 2 days.

14. They last visited their hometown 5 years ago.

15. I last saw my brother many years ago.

16. We were last taken to the zoo 3 months ago.

17. She hasn't sent me letters since last year.

18. It's age since she last phoned her parents.

FORMS:

S + haven't /hasn't + Vpp + for time /since time

S + last + Ved /V2 + time 

it + is /has been + time + since + S + last + Ved /V2