【高中词汇辨析】allow/permit/let/promise
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1. allow:允许,许可。指听任或默许,也可用来表示客气的请求。例如:

例26:Who allowed you to leave the camp?

  例27:Smoking is not allowed here.

  例28:Please allow me to introduce myself to you.

  2.permit:允许,许可。通常指正式的许可。例如:

  例29:He declared that he would permit me to do so.

  3.allow 和 permit 的含义虽然有所差别,但实际运用中两者常通用。

  4.let:允许,让。其后的宾语补足语应是不带to的不定式。一般不用于被动语态。例如:

  例30:Don’t let this happen again.

  例31:This is not allowed to happen again. (不说:This is not let to happen again.)

  5.promise:答应,允诺。用于主动答应自己要做什么的场合。例如:

  例32:They promised an immediate reply.

  例33:He promised to start at once.

  例34:I promised him to see to the matter right away.

  (我答应他马上处理这件事。不定式to see to 是主语I发出的。)

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