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状语从句
在主从复合句中,用作状语的从句称为状语从句。常用状语从句有以下七种类型:
3.原因状语从句
表示原因状语从句一般由because, as, since引导。
because因为 通常表示直接的原因。例如:
The postman stopped delivering letters because it was raining too hard.
由于雨太大邮快递员停止了送信。
He asked for leave because he had to see the doctor.
因为必须去看医生,他请了假。
as由于,因为… 语气比because弱,表示的原因为大家所知,强调结果。例如:
As it was hot, we went swimming in the sea.
因为天气炎热,我们去海里游泳。
As he camelate, he didn’t get a ticket for the pop concert.
由于他晚到,他没有拿到通俗音乐会的票子。
since/now that既然,因为, 强调已知的事实,语气较弱。例如:
Since everyone is here, let’s begin our discussion.
既然大家都到了,让我们开始讨论。
Now that everything is ready, shall we start?
既然一切都准备好了,我们开始好吗?
注意:
because/as/since 不能与so出现在同一句中。例如:
因为他生病,所以他不能来上学。
(×)Because he is ill, so hecan’t come to school.
(√)He is ill, so he can’t come to school.
(√)He can’t come to school because he is ill.
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