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…

-> I last went to school 4 months ago.

-> It is 4 months since I last went to school

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

-> The last time I cheated in exam was years.

-> I last cheated in exam years ago.

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.

-> The last time he smoked was 2 years ago.

-> It is 2 years since he last smoked.

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.

-> It is 5 days since I last met her.

-> The last time I met her was 5 days ago.

Vì: Form: 

(1) S + have/has + not + VpII + for + time

(2) It is + time + since + S + (last) + V-ed

(3) S + last + V-ed + time + ago

(4) The last time + S + V-ed + was + time + ago

Xin hay nhất ạ!