`1` If she understood the questions , she could do this test.

`->` Câu đk loại 2 

If  + mệnh đề quá khứ đơn, S + would / could + V + O 

`2`  Although he had to study for the exam ,  he stayed up late to watch the match between Viet Nam and Malaysia.

`->` Despite + Ving / N / N Phrases = Although  + S + V + O : mặc dù

`3` The city where  I live in has beautiful beaches

`->` Sử dụng mệnh đề quan hệ

`4` I asked how many brothers did he  have.

`->` S + askwd + mệnh đề quá khứ đơn

`5`  The car has been sold recently 

`->` Câu BD thì HTHT

S + has / have + been+ Vpp+ ...

1 If she understood the questions, she could do this test.

Điều kiện loại 2: If+ MĐQKĐ, S + would/could+ V+ O.

2 Although he had to study for the exam,  he stayed up late to watch the match between Viet Nam and Malaysia.

Despite/ in spite of+ N phase/ V-ing/ the fact that.

= Although/ Even though/ Though+ MĐ1, MĐ2.

3 The city where I live has beautiful beaches.

4 I asked how many brothers did he have.

S+ asked+ MĐQKĐ.

5 The old car has been sold by them recently.

Bị động thì HTHT.