1 How long have you been here?

->  When did you go here?

2 this is the first time I have seen such a beautiful girl

->  I have never seen such a beautiful girl before.

3 I haven't gone to school for 4 months because of covid-19

->  The last time I went to school was 4 months ago because of covid-19

4 I have never visited Halong Bay before 

->  This is the first time I have visited Halong Bay.

5 I haven't cheated in exam for years

->  It is years since I last cheated in exam

6 I have married for 10 years

-> I started marrying 10 years ago.

7 How long have she lived in Danang

->  When did she start living in Danang?

8 He hasn't smoked for 2 years

-> He last smoked 2 years ago.

9 I have learnt french for 3 years

->  I began learning French 3 years ago.

10 I haven't met her for 5 days

 -> I last met her 5 days ago.

cấu trúc có trong bài

Cấu trúc: S + have/ has + PII.

Cấu trúc: S + haven’t/ hasn’t + PII.

Q: Have/Has + S + PII?

A: Yes, S + have/ has.

      No, S + haven't / hasn't.

chúc bạn học tốt ạ

cho mk xin ctlhn đc ko ạ