1.Although the weather was bad , they had a wonderful holiday.

Công thức : Although S + V , S + V .

2. It is very nice to see you again.

Công thức : It is / was + Adj + to V .

3. He isn't old enough to have a driving license .

Công thức : S + tobe ( not ) + Adj + enough + to V .

4. She is such a busy person that she can't do the housework.

Công thức : S+ be+ such + (a/an) + Adj + N + that + S + V  .

5. A new mall will be built here.

Câu bị động ở thì tương lai đơn : S + will V → S + will be PII 

1. Although the weather was bad, they had a wonderful holiday.
2. Hoa, whose parents are working in this company, is my friend.
3. The children are looking forward to going to the circus.
4. A new mall will be built here.
5. After Sue cleaned the house, she fell asleep on the sofa.