距离考试越来越近了,小编为备考四级的同学们整理了
英语四级重点语法知识,希望可以为大家带来帮助,一起来学习一下吧。
英语四级重点语法知识:原因状语从句 比较:because, since, as和for
1)because语势强,用来说明人所不知的原因,回答why提出的问题。当原因是显而易见的或已为人们所知,就用as或 since。 I didn't go, because I was afraid. Since /As the weather is so bad, we have to delay our journey.
2)由because引导的从句如果放在句末,且前面有逗 号,则可以用for来代替。但如果不是说明直接原因,而是多种情况加以推断,就只能用for。 He is absent today, because / for he is ill. He must be ill, for he is absent today.