英语四级语法精讲状语从句之七

http://www.youth.cn  2013-07-27 00:00:00  中国青年网

  大学英语四级考试涉及的语法知识点多、涉及面宽,对不少考生来说都是一个难题。希望通过本专题的学习,考生能对四级语法有更全面的掌握!

  7. 原因状语从句

  连接词:because,since,as,for,now that,in that,owing to,due to,thanks to,because of,as a result of;

  比较:because,since,as和for

  1)because语势最强,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.

  now that :既然;

  in that :因为,通常只能放在句中,强调重要的,唯一的的原因;

  eg:Now that this semester is finished, I am going to rest a few days and take a trip.

  Human beings are different from animals in that human can speak and think.

  owing to, due to, thanks to, because of , as a result of等短语后面只能接词或短语,不能接从句。

编辑:廖书曼 来源:新东方在线

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