10/Unless Betty likes the sweater, she will exchange it

11/Unless you study harder, you will not get much higher marks

12/Unless he asks me, I won't tell him anything

13/Unless father takes his umbrella, he will surely get wet

14/Unless I am in yor place, I will not accept his offer

15/Unless it rains, we won't stay at home

16/Unless we read in bad light, we will not ruin our eyes

17/Unless we have more money, my family won't go to Da Lat

18/Unless I see him, I won't tell him this news

19/Unless my sister has enough money, she won't buy a new house

20/Unless you get here early, you won't have enough time to eat lunch

cấu trúc Unless = If not : trừ phi và sau Unless phải là một câu khẳng định 

#NOCOPY 

10. Unless Betty likes the sweater, she will exchange it.

11. Unless you don't study harder, you will get much higher marks.

12. Unless he asks me, I won't tell him anything.

13. Unless father takes his umbrella, he will surely get wet.

14. Unless I amnot in yor place, I will accept his offer.

15. Unless it rains, we won't stay at home.

16. Unless we don't read in bad light, we will ruin our eyes.

17. Unless we have more money, my family won't go to Da Lat.

18. Unless I see him, I won't tell him this news.

19. Unless my sister has enough money, she won't buy a new house.

20. Unless you get here early, you won't have enough time to eat lunch.