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用于由动词转化来的名词前

表示一次、一番等义(通常与 have, take, make, give 等动词连用)。如：

I think I’ll go for a swim. 我想游泳去。

The couple had a violent quarrel. 这对夫妻发生了激烈的争吵。

We had a visit from Richard on Sunday. 星期日理查德来拜访我们。

Have a try at the exam. I’m sure you will pass. 考考试试，你肯定能通过。

I snatched a look at the answers while the teacher was out of the room. 趁老师不在房间时，我迅速地偷看了一下答案。