1. She has started her new job for a year

2.They haven't visited the museum before

3.She has studied ballet since she was five

4.She hasn't met her parents for a ago

5.How long have you phoned her

6.Is this the first time have you climbed a mountain

7.I have read the book last night

8.She has not eat ... before

9.She has worked a teacher for 30 years

10.Haven't you visited to VN before

11.It was a month since it has rained

12.Jack has played drum for 5 hours

13 . I have bought this tape recorder since september

14.I have met John in university for 2 years

15.My neighbourhood married 10 years ago

Đây là các dạng bài chuyển từ QKĐ sang HTHT và HTHT sang HTHT nha bé

1.This is the first time,i have Vpp..

I haven't Vpp ... before

2.S + Vquakhu+...năm/tháng ago

S+have/has +vpp... since tháng,năm/for khoảng thời gian