`1`. This is the first time I have tasted such a good cake.

`->` This is the first time + S + have/has + Vpp

`2`. I last saw him two weeks ago.

`->` S + have/has + not + Vpp + for + khoảng thời gian = S + last + V2/ed + thời gian + ago

`3`. I have learnt English for 7 years.

`->` S + started + Ving/to V + thời gian + ago = S + have/has + Vpp + for + khoảng thời gian

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

`->` It is the first time + S + have/has + Vpp

`5`. No one in Tom's class is as tall as him.

`->` So sánh bằng/ không bằng: S + be (not) + as + adj + as + O

`6`. I haven't seen her for 3 years.

`->` S + have/has + not + Vpp + for + khoảng thời gian = S + last + V2/ed + thời gian + ago

`7`. They started learning English 10 years ago.

`->` S + started + Ving/to V + thời gian + ago = S + have/has + Vpp + for + khoảng thời gian

`8`. She has given up smoking since last year.

`->` S + have/has + not + Vpp + for + khoảng thời gian = S + started + Ving/to V + thời gian + ago

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

`->` S + have/has + not + Vpp + for + khoảng thời gian = S + started + Ving/to V + thời gian + ago

`10`. I last wrote to you a month ago.

`->` S + have/has + not + Vpp + for + khoảng thời gian = S + last + V2/ed + thời gian + ago

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

2. I last saw him two weeks ago

3. I have learning English for seven years

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

5. No one in Tom's class is as tall as him

6. I haven't seen her for three years

7. They started learning English ten years ago

8. She has not smoked since last year

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

10. I last wrote to you a month ago