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高中语法专练:iv. 原因状语从句

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2020年06月09日

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iv. 原因状语从句

1. because意为“因为”。

1)回答why引出的疑问句,只能用because回答。

—Why did you come late?

—Because I missed the bus.

——你为什么来晚了呢?

——因为我没有赶上公交车。

2)对原因状语从句强调时,只能强调because引导的状语从句。

It was because he didn't obey the rule that he was punished.

他正是因为不遵守规章而受了惩罚。

3)在only, just, simple等强调词后,只能用because。

He didn't learn English well just because he didn't work hard at it.

他没有学好英语只是因为他没有下功夫学。

4)与not连用,构成并列because分句时,只能用because。

He didn't come to the party, not because he refused to, but because he was badly ill.

他没有来参加晚会,不是因为他拒绝来,而是因为他得了重病。

2. as意为“由于”,语气比because弱。

As it is going to rain , we'd better hurry up.

由于天要下雨了,我们最好快点吧。

3. since=now that意为“既然”,通常位于句首。

1)since引导的从句总是位于主句前面。

Since you say so , I suppose it is true.

既然你这么说,我就假设它是真的。

2)表示明显的原因或事实。

Since everyone may make mistakes in life , we will give him a chance.

既然每个人一辈子都会犯错误,我们就给他一次机会吧。

3)now that具有时间概念,所引导的从句中的谓语动词多为现在时态。

Now that you are old enough to judge things, you'd better decide what to do next.

既然你大了能够做出判断了,你最好决定下一步做什么吧。

4. for意为“因为”。

1)经常把结果当原因,即用于倒果为因的说法,为主句所说的话提供推断的理由。

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

房子里一定有人病了,因为医生刚刚从里面出来。

2)for引导的从句只能放在主句后面,而且需要逗号与主句隔开。

He must have seen the film, for he knows so much about it .

他肯定看过那部电影,因为他对那部电影了解很多。

5. in that是复合连词,意为“因为;在于,在……方面”。

He didn't go abroad for further study in that he couldn't afford to do that.

他没有出国深造在于他付不起出国的钱。

6. considering that= seeing that意为“既然……;考虑到……”。

Considering that he was badly ill, he shouldn't keep on working so hard.

既然他病的那么重,就不应该继续那么卖劲儿工作了。

7. 介词短语+ that

1)on the grounds that ...

He left on the grounds that he was ill.

他以生病为由离开了。

2)for the reason that ...

He cannot be charged with murder for the simple reason that he was not in town when the crime was committed.

他不可能被指控谋杀,原因很简单:案发时他不在城里。

3)by reason that ...

He was not severely punished for his crime by reason that he was very young.

他没有因其犯罪而受到严厉惩罚因为他很年轻。

4)for fear (that) ...

Shut the window for fear that it may rain.

关上窗户以防下雨。

8. 复合介词+the fact that ...

1)on account of the fact that ...

On account of the fact that all the trains were delayed, the station was crowded with people.

由于所有火车都晚点了,火车站里挤满了人。

2)in the view of the fact that ...

We had to speed up in view of the fact that we had no time left.

我们只好加速,因为我们没有时间了。

3)Owing to the fact that ...

Owing to the fact that I had lost his address, I did not know where I could find him.

由于丢了他的地址,我不知道在哪里能找到他。

4)Because of the fact that ...

Because of the fact that they got to the airport too late, they could not buy the tickets they wanted.

由于到机场太晚,他们未能买到想要的票。

5)Due to the fact that ...

In summer very few visitors travel in Africa due to the fact that the weather is extremely hot.

由于天气很热,夏天非洲游客很少。

专项练习

1. Parents should take seriously their children's request for sunglasses _______ eye protection is necessary in sunny weather.

A. because

B. though

C. unless

D. if

2. _______ the weather was fine, I opened all the windows.

A. As

B. Because of

C. For

D. With

3. _______ you wouldn't like to go there, you might as well stay here.

A. Even if

B. Even

C. Now that

D. Although

4. _______ time went on, what our teacher said proved true.

A. As

B. Since

C. With

D. Because

5. He married _______ he loved her but because he was indebted to her.

A. because not

B. not because

C. because

D. though

答案速查 1-5 AACAB


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