摘要：A man cannot smile like a child, _ a child smiles with his eyes, while a man smiles with his lips alone.

中考英语原因状语从句选择填空专练及参考答案解析：

1. I didn't go to school yesterday _ I was ill.

A. because

B. though

C. until

2. _ everybody is here, lets begin our meeting.

A. Since

B. Because

C. As

3. _ you are in poor health, you should not stay up late.

A. For

B. As

C. Because of

4. He might have gone to bed, _ the light went out.

A. because

B. for

C. since

5. The man cant get on the bus _ there is no room on it.

A. though

B. because

C. until

6. _ her daughter hadnt come back, _ she looked worried.

A. Because, /

B. Because, so

C. Though, but

7. _ youve got a chance, you might make full use of it.

A. Now that

B. After

C. Although

8. He found it difficult to read, _ his eyesight was beginning to fail.

A. and

B. for

C. but

9. A man cannot smile like a child, _ a child smiles with his eyes, while a man smiles with his lips alone.

A. so

B. but

C. for

10. We didnt enjoy the day _ the weather was so bad.

A. because

B. though

C. unless

11. I asked her to stay to tea, _ I had something to tell her.

A. because

B. so

C. until

12. _ you do not understand, I will explain again.

A. Since

B. Though

C. Until

13. _ Jane was the oldest in this family, she had to look after the others.

A. As

B. If

C. Unless

14. He must be ill, _ he is absent today.

A. because

B. for

C. since

15. The teacher must be strict with you _ they want you to make great progress.

A. because

B. though

C. until

16. _ your father is well again, you no longer have anything to worry about.

A. Since

B. If

C. Until

17. _ you are ill, youd better go to see the doctor.

A. Since

B. Though

C. Unless

18. _ she was late for class, she had to say sorry.

A. As

B. If

C. Until

19. I came back early _ it was raining heavily.

A. because

B. because of

C. so

20. The ship changed its course _ there was a storm.

A. because

B. because of

C. so that

21. He couldnt walk _ his leg was broken.

A. because

B. because of

C. until

22. _ it is often cold in the mountains, you need to wear warm clothes.

A. Though

B. Unless

C. As

23. She didnt go to school _ she was ill.

A. because

B. because of

C. so

24. _ he was tired, he still went on working.

A. Although

B. Because

C. For

25. We all like him _ he is very kind.

A. because

B. though

C. until

26. _ it was very late, he still went on working.

A. Because

B. Although

C. For

27. He didnt come to school _ he was ill.

A. because

B. because of

C. so

28. _ you are a student, you should study hard.

A. Since

B. Because of

C. Although

29. The boy was late _ he got up late.

A. because

B. because of

C. so

30. _ it is raining, youd better take an umbrella.

A. As

B. If

C. Until

31. I didnt buy the book _ I had no money with me.

A. because

B. because of

C. so

32. _ he is rich, he is not happy.

A. Although

B. Because

C. For

33. We went to bed early _ we were tired.

A. because

B. because of

C. so

34. _ you work hard, you will succeed.

A. If

B. Because

C. Although

35. He was late _ the traffic was heavy.

A. because

B. because of

C. so

36. _ she was ill, she didnt come to school.

A. As

B. If

C. Until

37. I like spring _ it is warm.

A. because

B. though

C. until

38. _ he is very old, he still works hard.

A. Although

B. Because

C. For

39. We didnt go to the park _ it was raining.

A. because

B. because of

C. so

40. _ you are tired, you can have a rest.

A. Since

B. Because of

C. Although

参考答案及解析

1. 答案：A。解析：“I was ill”是“I didnt go to school yesterday”的原因，用because引导原因状语从句。

2. 答案：A。解析：since表示“既然”，强调大家都到了这个已知事实，引出开会的原因。

3. 答案：B。解析：as引导原因状语从句，“you are in poor health”是“you should not stay up late”的原因。because of后接名词或名词短语，for表原因时通常不用于句首。

4. 答案：B。解析：for表示原因时，是对前面情况的补充说明，“the light went out”是推测“He might have gone to bed”的原因。

5. 答案：B。解析：“there is no room on it”是“The man cant get on the bus”的原因，用because引导。

6. 答案：A。解析：because引导原因状语从句，“her daughter hadnt come back”是“she looked worried”的原因，because和so不能同时使用。

7. 答案：A。解析：now that表示“既然”，引导原因状语从句，“youve got a chance”是“you might make full use of it”的原因。

8. 答案：B。解析：for表原因，对“He found it difficult to read”进行补充说明，“his eyesight was beginning to fail”是原因。

9. 答案：C。解析：for连接两个句子，表原因，解释为什么“A man cannot smile like a child”。

10. 答案：A。解析：“the weather was so bad”是“We didnt enjoy the day”的原因，用because引导。

11. 答案：A。解析：“I had something to tell her”是“I asked her to stay to tea”的原因，用because引导。

12. 答案：A。解析：since表示“既然”，“you do not understand”是“I will explain again”的原因。

13. 答案：A。解析：as引导原因状语从句，“Jane was the oldest in this family”是“she had to look after the others”的原因。

14. 答案：B。解析：for表示原因，对“He must be ill”进行补充说明，“he is absent today”是推测他生病的原因。

15. 答案：A。解析：“they want you to make great progress”是“The teacher must be strict with you”的原因，用because引导。

16. 答案：A。解析：since表示“既然”，“your father is well again”是“you no longer have anything to worry about”的原因。

17. 答案：A。解析：since引导原因状语从句，“you are ill”是“youd better go to see the doctor”的原因。

18. 答案：A。解析：as引导原因状语从句，“she was late for class”是“she had to say sorry”的原因。

19. 答案：A。解析：“it was raining heavily”是“I came back early”的原因，because后接句子，because of后接名词或名词短语。

20. 答案：A。解析：“there was a storm”是“The ship changed its course”的原因，用because引导。

21. 答案：A。解析：“his leg was broken”是“He couldnt walk”的原因，用because引导。

22. 答案：C。解析：as表示“因为”，引导原因状语从句，“it is often cold in the mountains”是“you need to wear warm clothes”的原因。

23. 答案：A。解析：“she was ill”是“She didnt go to school”的原因，用because引导。

24. 答案：A。解析：although引导让步状语从句，“he was tired”与“he still went on working”是转折关系，“尽管他累了，但仍继续工作”。

25. 答案：A。解析：“he is very kind”是“We all like him”的原因，用because引导。

26. 答案：B。解析：although引导让步状语从句，“it was very late”与“he still went on working”是转折关系，“尽管很晚了，但他仍继续工作”。

27. 答案：A。解析：“he was ill”是“He didnt come to school”的原因，用because引导。

28. 答案：A。解析：since表示“既然”，“you are a student”是“you should study hard”的原因。

29. 答案：A。解析：“he got up late”是“The boy was late”的原因，用because引导。

30. 答案：A。解析：as引导原因状语从句，“it is raining”是“youd better take an umbrella”的原因。

31. 答案：A。解析：“I had no money with me”是“I didnt buy the book”的原因，用because引导。

32. 答案：A。解析：although引导让步状语从句，“he is rich”与“he is not happy”是转折关系，“尽管他富有，但他不开心”。

33. 答案：A。解析：“we were tired”是“We went to bed early”的原因，用because引导。

34. 答案：A。解析：if引导条件状语从句，“you work hard”是“you will succeed”的条件，不是原因。

35. 答案：A。解析：“the traffic was heavy”是“He was late”的原因，用because引导。

36. 答案：A。解析：as引导原因状语从句，“she was ill”是“she didnt come to school”的原因。

37. 答案：A。解析：“it is warm”是“I like spring”的原因，用because引导。

38. 答案：A。解析：although引导让步状语从句，“he is very old”与“he still works hard”是转折关系，“尽管他很老了，但仍努力工作”。

39. 答案：A。解析：“it was raining”是“We didnt go to the park”的原因，用because引导。

40. 答案：A。解析：since表示“既然”，“you are tired”是“you can have a rest”的原因。

来源：蒙古元素