1. It is/has been ten years since I last went to Ho Chi Minh city. ( Cấu trúc the last+S+V2 )
2. Tired as he was, he tried to help me with my home work. ( Cấu trúc Adj+as+S+to be, mệnh đề... )
3. Is was such an expensive car that I couldn't afford it. ( It+is/was+such+(a/an)+adj+N+that+mệnh đề)

4. I haven't been to NewYork before. ( HTHT : S+have/has+PP ) 
5. Hung accused her sister of damaging his camrea. (buộc tội ai về điều gì đó nên xài cấu trúc accuse somebody of sth. )

6. It was not until this summer that we had some holidays. ( Cấu trúc It was not until ... that +mệnh đề)

7.Had you not studied hard, you would have failed the exeam. ( đảo ngữ điều kiện )
8. Mai is the prettier of the two girl ( so sánh hơn)
9. I’ve never seen a better film than this film.

10. There are over 800 students in my school. ( số lượng : There is/are+số đếm+danh từ )
11. That plane is said to have crashed into the moutain. (Câu này là bị đông)

12. She tries to learn English well with a view to communicating with foreigners. ( Ý định làm gì đó +to V-ng)
13. I have taught English for 3 years. ( HTHT )

1.It is ten years since I last went to Ho Chi Minh City. 

2.Tired as he was,he tried to help me with my homework.

3.It was such an expensive car that I couldn't afford it.

4.I haven't been to New York before.

5.Hung accused her sister of damaging his camera.

6.It was not until this summer that we had some holidays.

7.Had not you study hard,you would have failed the exam.

8.Mai is the prettier of the two girl.

9.I have never seen such a good film.

10.There are over 800 students in my school.

11.That plane is said to have crashed in to the mountains.

12.She tries to learn English with a view to communicating with foreigners.

13.I have taught English for three years.