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should / ought to have done表达的语法意义

问题描述

  • They should have done more research.

  • I ought to have left here by 3.30.

  • Surely they should have got home by midnight.

请问这三句中should / ought to have done表达的语法意义是一样的吗?

老师答疑

陈老师:

They should have done more research.

I ought to have left here by 3.30.

Surely they should have got home by midnight.

请问这三句中should / ought to have done表达的语法意义是一样的吗?

【1】主语+should have done sth 表示主观上应该做某事却没有做

They should have done more research.(表示主观)

(表示主观,含有责备或不满)


【2】主语+ought to have done sth 表示客观上本应该做某事却没有做

I ought to have left here by 3.30.(表示客观)

(表示客观,含有责备和遗憾且语气更强)


should / ought to have done表达的语法意义

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