高中原因状语从句及练习(含答案)

高中原因状语从句及练习(含答案)
高中原因状语从句及练习(含答案)

2.原因状语从句

原因状语从句表示主句中动作或状态发生的原因或理由, 可位于主句之前,之后或插在主句中间。主句表示结果, 从句表示原因, 主要由because, as, since, for,

seeing ( that), considering ( that), now (that), in that, not ... because 等引导。

1) because“因为’’, as‘‘由于”, since “既然”, for“因为”

because意为“因为”, 表示直接的原因或理由, 着重点在从句, 用于回答why,语气最强。

He is absent today because he is ill.

当主句为否定句时, 从句because须用逗号与主句隔开, 否则容易引起歧义。

I didn’t visit him, because I wanted to borrow some books.

我没去拜访他, 因为我想借几本书。

I didn’t visit him because I wanted to borrow some books.

我不是因为想借几本书才去拜访他的。

as意为“由于”, 表示十分明显的原因, 所引导的从句常位于主句之前, 有时也可位于主句之后, 一般说明因果关系, 着重点在主句, 原因或理由只是附带说明, 不用于回答why的问题, 常用于口语。

As it is snowing, we shall not go to the park.

As this book is written in simple English, it is suitable for beginners.

since意为“既然, 由于”时表示对方已知的、无须加以说明的既成事实的理由, 只是一个附带说明。since = as it is the fact that ...全句中心在主句。如从句表示的原因不是确定的事实, 就不能用since,通常用because.

Since everybody is here, let’s begin our discussion.

Since you seem to know them, why don’t you introduce me to them?

for是一个并列连词, 由for连结的表原因的句子常看作并列句, 它只提供一些补充说明或对前一个分句加以解释, 不可前置。与because 不同的是:because引导的从句位置可前可后, 而for引导的分句只能后置, 且往往须用逗号或分号与前一个分句分开。

I didn’t go to see him, for a heavy snow was falling.

The days were short, for it was now December.

有时, for引起的从句并不表示原因, 而是表示一种推断或解释, 而because则不能。

Someone in the house must be ill, for a doctor has just come out.

He couldn’t have seen me, for I was not there.

一、填入恰当的连词

1. I didn’t go to school yesterday _________ I was ill.

2. ________ everybody is here, let’s begin our meeting.

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

4. I asked her to stay to tea, ________ I had something to tell her.

5. ________ all the passengers are here, why don’t we start at once?

6. Bill won’t make any progress ________ he doesn’t study harder than before.

7. He might have gone to bed, ________ the light went out.

1.because

2.Since

3.As

4.because

5.Since

6.because

7.for

二、填入恰当的连词

1. ______ you do not understand, I will explain again.

2. ______ Jane was the oldest in this family, she had to look after the others.

3. He must be ill, ______ he is absent today.

4. The teacher must be strict with you ______they want you to make great progress.

5. _____your father is well again, you no longer have anything to worry about.

6. The day breaks, _____the birds are singing.

7. ______ you are ill, you’d better go to se e the doctor.

8. ______ she was late for class, she had to say sorry.

1.since

2. As

3. for

4. because

5. Since

6. for

7. Since

8. As

2) 用下列短语引导:

seeing (that) “鉴于, 既然”, considering (that) “考虑到”now (that)“既然”, in that “因为”, not ... because “不是因为”not that……but that “不是因为……而是因为, ’

seeing that与considering that同义, 含义近似since,所引导的句子中心在主句, 重在强调结果。

Seeing that the weather is bad, we’ll stay a t home.

Considering that they are newcomers, they’ve accomplished a lot.

now that的含义与since(“既然”)接近, 区别在于:since表示原先已存在的情况, 而now that 表示由于新情况的出现而促成某事发生。

Now that it has stopped raining, let’s start at once.

Now that you are all here, let’s try to reach a de cision.

in that作“因为”解时, 由于介词in的含义是指“在……方面”, 有限制作用, 因此多指由于某一方面的原因或理由, 不能位于句首。

I like the city, but I like the country better in that I have more friends in the country.

I could understand his point of view, in that I’d been in a similar position myself.

not ... because意为“不是因为”, 该结构中的not否定because。

She didn’t marry you because you had money.

她不是因为你有钱才嫁给你。

The machine didn’t stop because the fuel was used up.

机器不是因为燃料耗尽才停下来的。

not that ... but that作“不是因为……而是因为”解。

Not that I don’t like the film, but that I h ave no time for it.

He felt a bit worried, not that they were not working hard, but that they didn’t pay enough attention to safety.

家庭作业

选择恰当的答案

1. The man can’t get on the bus ______ there is no room on it.

A. though

B. because

C. until D so that

2. ______ her daughter hadn’t come back, ______ she looked worried.

A. Because, /

B. Because, so

C. Though, but

D. Though, /

3._______ you’ve got a chance, you might make full use of it.

A. Now that

B. After

C. Although

D. As soon as

4. He found it difficult to read, _______ his eyesight was beginning to fail.

A. and

B. for

C. but

D. or

5. 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. and

D. for

1.B

2.A

3.A

4.B

5.D

1.____ nobody was very interested in it, they decided to cancel the trip.

A. Even though

B. As soon as

C. While

D. Seeing that

2.____ our country has so many good table-tennis players, we have to decide on the best ones to take part in the game.

A. Although

B. Since

C. If

D. While

3. Not that John doesn’t want to help you, ____ it’s beyond his power.

A. but that

B. for that

C. and that

D. in that

4. Animals suffered at the hands of man____ their habitats were destroyed by people to make way for agricultural land.

A. in which

B. for which

C. so that

D. in that

5.____ Tom has no interest in piano, there is no point pushing him to learn it.

A. Now that

B. In case

C. Even if

D. As if

(D;B;A;D;A)

1.____ you’ve got a chance, you might as well make full use of it.

A. Now that

B. After

C. Although

D. As soon as

2. He found it increasingly difficult to read, ____ his eyesight was beginning to fail.

A. and

B. For

C. But

D. or

3. 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. and

D. for

4. I didn’t go _____ I was afraid.

A. Since

B. For

C. Because

D. Though

5. ______ it was raining, ______ we stayed at home.

A. Because, so

B. Because ,/

C. Because ,for

D. If ,so

6. I said nothing about it ____ his wife was there.

A. since

B. so that

C. because

D. unless

7. ______ the weather is so bad, we have to delay our journey.

A. before

B. since

C. till

D. After

8. _____ it is raining, you’d better take a taxi.

A. before

B. as

C. till

D. after

9. You shouldn’t get angry just ______ some people speak ill of you.

A. since

B. so that

C. because

D. unless

10. _____ you are here, you’d better stay.

A. before

B. Now that

C. till

D. after

11. I hurried ________I wouldn’t be late for class.

A. since

B. so that

C. as if

D. unless

12. I saw Mr. Smith last Sunday. We had not seen each other ________I left London.

A. as

B. before

C. since

D. till

13. ________ you are so weak, you’d better stay at home.

A. Since

B. For

C. Because

D. Though

14. I’m sorry you’ve been waiting so long, but it’ll still be some time ____ Brian get back.

A. before

B. since

C. till

D. after

15. —Did you return Fred’s call?

—I didn’t need to ____ I’ll see him tomorrow.

A. though

B. unless

C. when

D. Because

16. Accustomed to______ the steep mountains, he had no difficulty reaching the top.

A. climbing

B. climb

C. having climbed

D. have climbed

17. ______ we’ve no money, we can’t buy it.

A. though

B. unless

C. when

D. As

1-5: ABDCB 6-10: CBBCB 11-15: BCAAD AD

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