初中英语状语从句知识点:原因状语从句 连词有:because as since now that等 (1) 区分because, as, since, for ① because表示人们不知道的直接的原因或理由,着重点在从句,其所引导的从句,为全句句意的中心所在。通常用于回答why引出的疑问句,语气最强,除特别强调外,该从句一般位于主句后面,不能与so连用但是可以与so进行同义句转换。 I didn't go aboard with her because I couldn't afford it. 我没有和她一起出国是因为费用太高。 ② as引导的原因状语从句所传递的通常是已知信息,从句多位于主句之前,表示双方那个已知的理由,如: As I didn't know the way,I asked a policeman. 我不认识路,因而问警察。 ③ since引导的原因状语从句多表示大家众所周知的理由,如: Since traveling by air is much faster, they decided to take a plane. 既然乘飞机旅行快得多,他们就决定坐飞机。 (责任编辑:admin) |