英语中“因为，所以”就那么简单吗？because用法精讲

A：Why can't you do it now?你为什么不现在就做呢?

B：Because I'm too busy. 因为我太忙。

It is because he is foolish. 那是因为他太蠢了。

It is because he is honest that we likehim. 是因为他诚实我们才喜欢他。

I didn't go because I was afraid.

(1) 我没有去是因为怕。

(2) 我不是因为怕才去。

不过若because之前有just修饰，一般认为not 是否定从句而不是主句。如：

You shouldn't get angry just because some people speakill of you. 你不要因为有人说你坏话而生气。

He was not readyto believe something just because Aristotle said so. 他并不只是因为亚里士多德说过如何如何，就轻易相信它。

The reason why he can't come is that he is tired. 他不能来是因为他累了。

在这一结构中尽管不少人认为可将that改用 because, 但也有不少人反对这一用法，学生宜慎用。

因为下雨，所以我们呆在家里。

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

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

误：Because it was raining, so we stayed at home.

(1) 是复合介词，其后可接名词、代词、动名词以及由关系代词型的 what 所引导的从句等。如：

He couldn't come because of illness. 他因病不能来。

I said nothing about it, because of his wife'sbeing there. 因为他妻子在那儿，我对此事只字未提。

He knew shewas crying because of what he had said. 他知道她哭是因为他说的话。

注意：

because of不能直接引导从句或后接that引导的从句。如：

他不能来是因为他病了。

正：He can't come because he is ill.

正：He can't come because of his illness.

误：He can't come because of he is ill.

误：He can't come because of that he is ill.

(2) because of 一般引导状语，不引导表语 (引导表语时可用 dueto)。如：

正：His absence is due to the rain. 他因雨未来。

误：His absence is because of the rain.

但是若主语是代词 (不是名词)，because of 引出的短语则可用作表语。如：

It is just because of money. 那只是因为钱的原因。

(1) . because 可用来回答why提出的问题；可以引导表语从句；可用于强调句等，而其余三者则不行。

(2) because 表示的是必然的因果关系，语气最强，通常放在主句之后，若需强调则放在主句之前；since, as所表示的原因是人们已知的，是对已知事实提供理由，而不表示直接原因。它们引导的从句通常放在主句之前，有时也放在主句之后。如：

As he wasn't ready in time, wewent without him. 因他未及时准备好，我们没等他就先走了。

Since we have no money, it's no good thinking about a holiday. 既然我们没有钱，考虑度假有什么用。

至于 for, 它是并列连词 (其余三者为从属连词)，它有时可表示因果关系 (通常要放在主句之后，且可与 because 换用)；有时不表示因果关系，而是对前面分句内容的解释或推断 (也要放在主句之后，但不能与 because 换用)。试比较。

①The ground is wet, for (=because) it rained last night. 地面是湿的，因为昨晚下过雨。

②It must have rained last night, for the ground is wetthis morning. 昨晚一定下过雨，你看今天早上地上是湿的。

每天推送生活英语小知识。