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because, since, as和for 引导的原因状语从句

时间:2016-11-29 04:03:10

(单词翻译:单击)

   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 delay1 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.

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1 delay UxixO     
v./ n.拖延,延误,延迟,延期;耽搁
参考例句:
  • The strike caused a great delay in the delivery of the mail.这次罢工严重地延误了邮件的投递。
  • I couldn't judge whether the delay was good or bad.我不能断定这样延迟是好还是坏。