The students couldn't help_laughing___(laugh) at his funny story.为什么?

问题描述:

The students couldn't help_laughing___(laugh) at his funny story.为什么?

couldn't help doing, 是固定搭配,忍不住做某事的意思。
句意:同学们听了他讲的好笑的故事,都忍不住大笑起来。

can't help doing固定搭配 禁不住做某事,情不自禁做某事
学生们禁不住笑话他的滑稽故事

这是固定用法,但不是“迫不及待做某事”,是"无法控制而笑..."
希望可以帮到你!

can't help doing sth 情不自禁做某事

can't / couldn't help doing sth 固定用法‘ 迫不及待做某事’
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