6. Unless he believe her, she will be upset.

`->` Unless + S + V(hiện tại đơn), S + will/can/shall + V(infi).

7. If you play with matches, you will be burned.

`->` If + S + V(hiện tại đơn), S + will/can/shall + V(infi).

8. She has done her homework for two days.

`->` for + khoảng thời gian: hiện tại hoàn thành.

`->` S + have/has + VpII.

9. This is the first time I have ever read such an interesting story.

`->` This is the first time + S + have/has + VpII.

10. Although she doesn't sing well, she sings every day.

`->` Although + S + V(chia theo thì thích hợp).

6. Unless he believe her, she will be upset.

7. If you play with matches, you will be burned.

8. She has done her homework for two days.

9. This is the first time I have ever read such an interesting story.

10. Although she doesn't sing well, she sings every day.

chúc bạn học tốt >.<

cho mik ctlhn nha^-^