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标题: because, since, as 与 for [打印本页]

作者: djt000    时间: 2013-11-14 17:04
标题: because, since, as 与 for
这四个词都可用来表示原因,区别如下:
1. 关于 because:语气最强,表示直接原因,可用于回答 why 提出的问题、引导表语从句、用于强调句等,而其余三者均不行。如:
AWhy didn’t he come? 他为什么没来?
BBecause he was ill. 因为他病了。
It is because he is too busy. 那是因为他太忙了。
It is because he is honest that I like him. 是因为他诚实我才喜欢他。
2. 关于 since as
(1) 两者所表示的原因都是人们已知的,即对已知事实提供理由,而不是表示直接原因。since as 语气稍强,且比 as 略为正式,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 you weren’t there, I left a message. 由于你不在那儿,我留了个口信。
Since you are wrong, you should apologize. 你既然错了,就应该道歉。
(2) since 可用于省略句,而其他三者不行。如:
Since so, I have nothing to say. 既然如此,我无话可说。
3. 关于 for: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)。比较:
The ground is wetfor (because) it rained last night. 地面是湿的,因为昨晚下过雨。
It must have rained last nightfor the ground is wet this morning. 昨晚一定下过雨,你看今天早上地面是湿的。(此句不能用 because for)
4. 习惯表达:
汉语习惯上说因为……所以……”,但是在英语里却不能将 so because, since, as 等连用:
因为天气很好,所以我们去游泳了。
误:Because it was fine, so we went swimming.
正:Because it was fine, we went swimming.
正:It was fine, so we went swimming.
因为很迟了,所以我要回家了。
误:Since it is late, so I shall go home now.
正:Since it is late, I shall go home now.





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