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情态动词ought to使用方法质疑

来源:www.cznuofan.com 2025-01-08

《朗文》第六版ought to词条有一例句:

You were out enjoying yourself when you ought to have been studying.

应该学习的时候你却在外玩。

这里have been studying是不是应改为be studying?

由于主句为过去时,所以ought to也表过去,其后再接个完成进行时,则语意不通;假如ought to表目前,则出现“主过从现”,不合语法规则。

1) 第一质疑权威是可以的,但这种朗文除非排版或版本错误,不然极少有错。

2) should /ought to have done是过去该做却没做,是情态表达的意义之一。

https://www.cpsenglish.com/question/35634

另外注意: 情态助动词没“时态”的标记, 少数几个词项虽有过去时形式如 could, might, would, should,但在很多状况下并不表示过去时间。

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