3.
→I've played tennis for a year
4.
→He has used the computer since he was 19
→when đổi thành since
5.
→She hasn't learnt hard since 2005
→in đổi thành since
6.
→Peter has watched this film since he came home
→when thành since
7.
→I haven't seen her for a week
8.
→The boys have played soccer for a year
9.
→Has Dad worked here since i was born?
10
→How long ago did you first see her?
→How long ago + trợ động từ+S+V+O
11.
→We haven't seen her for 2 months
→Bỏ was
12.
→Tom hasn't worked here since i met him on the street.
→when thành since
HỌC TỐT NHÁ
