`1.` visited 

`-` last year là DHNB thì QKĐ

`2.` didn't travel

`-` last summer là DHNB thì QKĐ

`3.` hasn't do

`-` yet là DHNB thì HTHT

`4.` have never been

`-` never là DHNB thì HTHT

`5.` Have - ever seen

`-` ever là DHNB thì HTHT

`==============`

`=>` Cấu trúc thì Hiện Tại Hoàn Thành:

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

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

`(?)` Have/ has + S + VpII + O..?

`-` He/ She/ It/ N số ít + has

`-` I/ We/ You/ They/ N số nhiều + have

`-` Dấu hiệu nhận biết: for, since, yet, ever, just....

`@`

`=>` Cấu trúc thì Quá Khứ Đơn:

`-` Động từ thường:

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

`(-)` S + didn’t + V + O..

`(?)` Did + S + V + O..?

`-` Dấu hiệu nhận biết: last, ago, in, yesterday,...

1.My aunt and uncle visited( visit) Lon Don last year.

Cấu trúc QKĐ ( last year): S + V2/ed + O

2.Last summer,we(not,travel) didn't travel to Ha Long Bay because my brother was sick.

Cấu trúc QKĐ ( last summer): S +didn't + V + O

3.Tom hasn't done (not,do) his home work yet.

Cấu trúc HTHT( yet): S +haven't/ hasn't + V3 + O

4.I have never (never/be) been Lon Don.

Cấu trúc HTHT( never): S +have/ has + V3 + O

5.Have you(ever,see)ever seen the flim TITANIC?

Cấu trúc HTHT( never): Have/ Has + S + V3 + O?