第1个回答 2013-10-28
Because he was ill, he didn't go to school.因为他病了,他没去上学。(直接理由)
He must have passed this way, because there is no other road.他可能是从这条路走了,因为除此以外别无它路可走。(必然的推断)
since较as意味略强。它们都可以表示较明显的或对方已知的原因。可分别译作“既然”和“由于”。since和as从句一般放在主句之前。例如:
Since his method doesn't work, let's try yours.既然他的方法不行,我们就试试你的吧。
As I didn't know how to do it, I asked the teacher.由于我不知道怎样做,就问了老师。
2.for是并列连词,位于两句之中,连接并列的分句。当for表示因果关系时,可与because换用,但在for前面须用逗号。例如:
You couldn't have seen him, because/for he wasn't there.你不可能见到他,因为当时他不在那里。
The electric current must have been turned off, because/for the light went out.想必是停电了,因为灯灭了。
for除此之外了表示因果关系外,还可以述说对主句中的事实或看法的解释。例如:
It will rain, for it's getting dark, 要下雨了,因为天气越来越暗了。
It must be snowing, for it is so bright outside.一定在下雪,外面这么亮。
浅析because, since, as和for的用法
Because he was ill, he didn't go to school.因为他病了,他没去上学。(直接理由)
He must have passed this way, because there is no other road.他可能是从这条路走了,因为除此以外别无它路可走。(必然的推断)
since较as意味略强。它们都可以表示较明显的或对方已知的原因。可分别译作“既然”和“由于”。since和as从句一般放在主句之前。例如:
Since his method doesn't work, let's try yours.既然他的方法不行,我们就试试你的吧。
As I didn't know how to do it, I asked the teacher.由于我不知道怎样做,就问了老师。
2.for是并列连词,位于两句之中,连接并列的分句。当for表示因果关系时,可与because换用,但在for前面须用逗号。例如:
You couldn't have seen him, because/for he wasn't there.你不可能见到他,因为当时他不在那里。
The electric current must have been turned off, because/for the light went out.想必是停电了,因为灯灭了。
for除此之外了表示因果关系外,还可以述说对主句中的事实或看法的解释。例如:
It will rain, for it's getting dark, 要下雨了,因为天气越来越暗了。
It must be snowing, for it is so bright outside.一定在下雪,外面这么亮。