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问题: as,because,with都引导何种从句?

从句又都应该是什么时态?谢谢

解答:

as 由于,引导原因状语从句,但它所指的原因是附加的,主要突出主句.如:I am sorry I am late for class,as my bike was broken on the way.(主要在道歉)
because因为,也引导愿意状语从句,一,其常用在口语中.二.回答why从句时用.三.在强调原因时用.如:I was late for class because my bike was broken on the way.It was not my mistake.(在强调理由)
以上两个词后的从句时态没有限制.
with后不跟从句.如:With much work to do ,I will have to stay up tonight.