=>

1. The last time I heard from him was in August.

2. We last saw Tom when he moved to Bristol.

3. She hasn't gone out with him for two years.

QKĐ: S V2/ed

HTHT: S have/has V3/ed

`1`. The last time I heard from him in August.

`2`. We last saw Tom when he moved to Bristol.

`3`. She hasn't gone out with him for two years.

`----------------`

`@` Cấu trúc QKD <=> HTHT:

`-` This is the first time + S + have/has + V3/ed: Lân đầu tiên ai đó làm gì...

`=` S + have/has + not/never + V3/ed + before

`-` The last time + S + V2/ed + was + time + ago: Lần cuối ai đó làm gi vào thời gian nào...

`=` S + last + V2/ed + time + ago/when + Clause

`=` S + haven't/hasn't + V3/ed + for/since + khoảng thời gian/mốc thời gian

`-` S + started/began + toV/Ving + time + ago: Ai đó bắt đầu làm gì vào thời gian nào đó trước đây

`=` S + have/has + V3/ed + for/since + khoảng thời gian/mốc thời gian