河南专升本英语语法-状语从句(8.28)

　　原因状语从句

　　because/as/for/seeing that/considering that…由于since/now that 既然

　　because 强调原因，是句子较重要的部分，在很多情况下，不能用 since，for

　　等替代。

　　Eg: Henry didn’t go to the office because it was raining.

　　He resigned partly because he was old and partly because he was bored with the work. I didn’t help, not because I was unwilling, but because I was unable to do it.

　　as 和 since 所提出的原因是已知的，或是句中不重要的部分，since 较 as 稍正式一些

　　Eg: As his fat is in a large town, he has no garden of his own.

　　Since you don’t trust him, you should not employ him.

　　for，一种补充说明，而且 for 引导的句子不能放在句首，for 是并列连词

　　Eg: He seldom goes out now, for he is very old.

　　not that…but that...“不是因为……而是因为……”

　　Eg: It’s not that I’m dissatisfied, but that I have my own business to attend to.

　　5) in that 多出现主句之后;seeing that 因为，鉴于;considering that 因为，考虑到

　　Eg: I like this place, but I like my hometown better in that I have more friends there.

　　Seeing that/ since he was there, he may have seen her. That is excusable considering/ seeing (that) he is so young.