那个谜题他解了整整三天,最后终于放弃了。

那个谜题他解了整整三天,最后终于放弃了。

He had been working on the puzzle for three days before he finally gave up.

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He had been working on the puzzle for three days before he finally gave up.

give 是动词,up 是副词小品词,共同构成不及物短语动词,表示"放弃"。句中不跟直接宾语。

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