=>
1. This is the first time I have tasted such a good cake.
-> This is the first time HTHT have/has V3/ed (lần đầu tiên)
2. I last saw him two weeks ago,
-> last (thì QKĐ V2/ed)
3. I have learnt English for seven years.
-> chuyển QKĐ sang HTHT have/has V3/ed, for + khoảng time
4. It's the first time I have seen such a wonderful computer.
-> the first time HTHT (lần đầu tiên)
5. No one in Tom's class is taller than Tom.
-> so sánh hơn adj-er than
6. I haven't seen her for three years.
-> chuyển QKĐ sang HTHT have/has V3/ed, for + khoảng thời gian
7. They started learning English ten years ago.
-> started Ving : bắt đầu
8. She has given up smoking since last year.
-> chuyển QKĐ sang HTHT have/has V3/ed, since + mốc thời gian
9. Tom and Mary started working in that factory in 1990.
-> started Ving : bắt đầu
10. I last wrote to you a month ago.
-> last (thì QKĐ)

1. This is the first time I've tasted such a good cake.

2. I last saw him two weeks ago.

3. I have learned English for 7 years.

4. It's the first time I've seen such a wonderful computer.

5. No one in Tom's class is taller than him.

6. I haven't seen her for three years.

7. They started learning English ten years ago.

8. She has given up smoking since last year.

9. Tom and Mary started working in that factory in 1990.

10. I last written to you a month ago.