1. Although she was ill, she went to school.

- In spite of .............................................................................................................................

2. He didn’t come because he was sick.

- He didn’t come because of...........................................................................................................

3. She didn’t eat much though she was hungry.

- Despite .......................................................................................................................

4. The train was late because the fog was thick.

- Because of .......................................................................................................................

5. I accepted the job although the salary was low.

- In spite of .......................................................................................................................

6. The plane couldn’t take off because the weather was bad.

- Because of .......................................................................................................................

7. She stayed at home because her mother was sick.

- Because of .......................................................................................................................

8. He didn’t leave school even though his family was poor.

- Despite .......................................................................................................................

9. All the teachers love him because his conduct is good.

- Because of .......................................................................................................................

10. The flight was not delayed though it was foggy.

- Despite .......................................................................................................................

11. We couldn’t study because it was noisy.

- Because of ......................................................................................................................

12. Even though it was cold, I went swimming.

- In spite of .......................................................................................................................

13. These students didn’t arrive late although there was the traffic jam.

- Despite .......................................................................................................................

14. Mary can’t sleep because there was the noise.

- Because of .......................................................................................................................

15. She didn’t get ill though she worked very hard.

- In spite of .......................................................................................................................

16. His wife usually gives him a list because he often forgets things.

- Because of .......................................................................................................................

17. Though he had much experience, he didn’t succeed in repairing the machine.

- Despite .......................................................................................................................

18. Though Kid has failed so often, he has never been disappointed.

- Despite .......................................................................................................................

19. Though I hadn’t eaten anything for 24 hours, I didn’t feel hungry.

- In spite of .......................................................................................................................

20. He ate all the fruits though they were green.

- He ate all the fruits despite...........................................................................................................

21. He left school because his life was hard.

- Because of .......................................................................................................................

22. Although he hadn’t finished the paper, he went to sleep.

- Despite .......................................................................................................................

23. He is dismissed because of being late for work often.

- Because .......................................................................................................................

24. Because of driving too fast, he caused a serious accident.

- Because .......................................................................................................................

25. Although the streets are narrow, many people drive cars in this city.

- In spite of .......................................................................................................................

26. Because he got up early, he wasn’t late for the first train.

- Because of .......................................................................................................................

27. Although he is strong, I’m not afraid of him.

- In spite of .......................................................................................................................

28. My neighbour couldn’t return home because of losing all of his money.

- Because .......................................................................................................................

29. He carried the bed onto the roof of his house because of the hot weather.

- Because .......................................................................................................................

30. I can sleep although it is hot.

- In spite of .......................................................................................................................

31. I couldn’t do the test because it was difficult.

- I couldn’t do the test because of...................................................................................................

32. He always studies hard though he encounters difficulties.

- Despite .......................................................................................................................

33. Because of not knowing Russian, I’ve had to have the document translated into French.

- Because .......................................................................................................................................

34. Although it got dark, they continued to work.

- In spite of .......................................................................................................................

35. Although he’s got an English name, he is in fact German.

-Despite. .......................................................................................................................

36. Because of having an accident, these students arrived late.

- Because .......................................................................................................................

37. Nick is often punished because he is lazy.

- Because of .......................................................................................................................

38. We bought the house though its rooms were small.

- We bought the house despite.......................................................................................................

39. The accident happened because of his being negligent in his driving.

- Because .......................................................................................................................

40. Karen works on Sundays because she gets paid extra.

- Because of .......................................................................................................................

41. Although he had planed everything carefully, a lot of things went wrong.

- Despite .......................................................................................................................

42. She ate much because of her hunger.

- Because .......................................................................................................................

43. Although the prices are high, my daughters insist on going to the movie.

- Despite .......................................................................................................................

44. We didn’t go fishing because the water was rough.

- Because of .......................................................................................................................

45. Although they study hard, they can’t get good marks.

- In spite of .......................................................................................................................

46. In spite of her telling the truth, the policeman didn’t believe her.

- Even though .......................................................................................................................

47. Because there were the obstacles, the building didn’t go along as planed.

- Because of .......................................................................................................................

48. Because of not hearing the speaker, I moved to the front row.

- Because .......................................................................................................................

III. Change clauses of concession to phrases.
1. She didn’t eat much though she was hungry.
2. He couldn’t solve the problem though he is good at maths.
3. Mr Pike doesn’t wear glasses though he is over sixty.
4. Although he had much experience in machinery, he didn’t succeed in repairing this machine.
5. Although it got dark, they continued to work.
6. Although it was noise, I kept on studying.
7. Although it rained heavily, I went to school on time.
8. The flight was not delayed though it was foggy.
9. He ate all the fruits though they were green.
10. We did the test well though it was difficult.
11. Although he is strong, I’m not afraid of him.
12. Everybody has great regard for him though he is poor.
13. The plane took off though the weather was bad.
14. He didn’t stop his car though the traffic lights turned red.
15. He studied very well though his life was hard at that time.
16. Although the streets are narrow, many people drive cars in this city.
17. Although his English was good, he wasn’t chosen.
18. Although he’s got an English name, he is in fact German.
19. He always studies hard though he encounters difficulties.
20. Although the weather is bad, we are going to have a picnic.
21. Although he had not finished the paper, he went to sleep.
22. She attended the class although she didn’t feel alert.
23. The child ate the cookies even though his mother had told him not to.
24. She drank coffee to keep herself warm although she disliked it.
25. Mary will take a plane even though she dislikes flying.
26. Although Mary was sad, she managed to smile.
27. The old woman told interesting stories to the children although her memory was poor.
28. Though he had been absent frequently, he was managed to pass the test.
29. He ate the chocolate cake even though he was on diet.
30. Although the prices are high, my daughters insist on going to the movie.

1,Chung minh:

a,n⁴+4 la hop so.

b,n⁴+4k⁴ la hop so (k thuoc N,k>1).