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关于原因状语从句的知识点:七年级上册英语期中考试复习

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2015-11-26

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是用来说明引起主句这个结果的原因的从句,在初中阶段引导原因状语从句的从属连词主要的有because, as, since,for等。例如:

1.I didn’t go to school yesterday because I was ill.   我昨天没去上学,因为我生病了。

2. Since everybody is here, let’s begin our meeting.   既然大家都来了, 让我们开始开会吧.

3. As you are in poor health, you should not stay up late.   既然你身体不好, 你就不该熬夜.

4.I asked her to stay to tea, for I had something to tell her. 我请她留下来喝茶,因为我有事要告诉她.

原因状语从句应注意的问题

1、because , since , as , for,辨析

1)because语势最强,用来说明人所不知的原因,回答why提出的问题。当原因是显而易见的或已为人们所知,就用as或 since。

I didn’t go, because I was afraid.

Since /As the weather is so bad, we have to delay our journey.

2)由because引导的从句如果放在句末,且前面有逗 号,则可以用for来代替。但如果不是说明直接原因,而是多种情况加以推断,就只能用for。例:

He is absent today, becaus e / for he is ill.   He must be ill, for he is absent today.

3) as和for的区别:通常情况下,as引导的从句在主句前,for引导的从句在主句后。例:   As the weather is cold, I stay at home.(同义句)   I stay at home, for the weather is cold.

2、because习惯上不与so连用

汉语习惯上说“因为…所以…”,但英语习惯上却不能将 so与because 连用:

正:Because it was raining, we stayed at home. / It was raining, so we stayed at home.

误:Because it was raining, so we stayed at home. 因为下雨,所以我们呆在家里。

3、because 从句与 because of短语的转换

Because引导的原因状语从句有时可与because of 短语转换,because of后加的原因可以为好或坏 ,但最正规的还是because。

He can’t come because he is ill. / He can’t come because of his illness. 他因病不能来。

I said nothing about it because his wife was there. / I said nothing about it because of his wife’s being there. 因为他妻子在那儿,我对此事只字未提。

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