1. On weekdays, my parents aren't able to go swimming.
( câu phủ định thì hiện tại đơn )
2. I don't watch TV as much as my sister.
( So sánh ngang bằng : S1 + be + as + adj + as + S2 )
3. It was going to take a long time, so we decided not to go by train but by plane.
4. I haven't spoken to Tom since I lent him my hat.
( Thì hiện tại hoàn thành )
5. Air travel is the fastest kind of transport.
6. If the cafe was not dirty, we would eat there. ( câu ĐK loại 2 )
7. You won’t be able to buy a house in that district for less than $100,000.
8. I really need to repair my car.
9. It is belived that someone murdered Mr Harry.
10. So long as I have free time tomorrow, we can meet for a cup of coffee.