2019年12月英语四级语法总结:原因状语从句

2019-12-13 17:15:20来源:网络

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  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;


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