中考網(wǎng)整理了關(guān)于中考復(fù)習(xí)知識(shí)點(diǎn)之原因狀語從句，希望對(duì)同學(xué)們有所幫助，僅供參考。
原因狀語從句
(1)原因狀語從句通常由 because, since,as引導(dǎo)。例如:
He didn't come to school because he was ill.
As it is raining, we shall not go the zoo.
Since you can't answer the question, I'll ask someone else.
(2)because表示直接原因,語氣最強(qiáng) 。Because引導(dǎo)的原因狀語從句多放在主句之后�；卮鹩蓋hy提出的問題,只能用 because。
As和 since語氣較弱,一般用來表示明顯的原因。由as和 since引導(dǎo)的原因狀語從句多放在句首。例如:
--Why aren't you going there?
--Because I don't want to.
As he has no car, he can't go there easily.
Since we have no money, we can't buy it.
(3)because和so不能同用在一個(gè)句子里。
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