(2)原因状语从句
原因状语从句常用because,since,as引导。
because表示直接的原因或理由,着重点在从句,用于回答why,语气最强,常译为"因为"。例如:
He is absent today because he is ill.
since一般表示对方已知的、无须加以说明的既成事实的理由,全句中心在主句,语气比because弱,常译为"既然"。例如:
Since you don't understand,I will explain it again.
as表示十分明显的原因,一般说明因果关系,着重点在主句,语气较弱,常译成"由于"。例如:
As it is snowing,we shall not go to the park.
关于表原因的连词for。一般语法家把for看作并列连词,引导并列分句,功用与because等从属连词不同。for引导的分句,主要是补充说明原因,解释另一分句,不可回答why的问句。例如:
He felt no fear,for he is brave.
(3)地点状语从句
地点状语从句常用where,wherever,anywhere,everywhere等连词引导。注意不要和where引导的定语从句相混淆。例如:
Where there is a will,there is a way.I will meet you anywhere you like.
Make marks where you have any questions.We shall go where working conditions are difficult.
(状语从句)
We shall go to the place where working conditions are difficult.
(定语从句)
(4)条件状语从句
条件状语从句用if,unless(if...not),as(so) long as(只要)等词引导。如果主句是将来时,条件状语从句用一般现在时表示。例如:
As long as I live,I shall work hard.I shall not go to the cinema unless I finish my homework.
