by accident,by chance &happened都有啥用法和区别啊?讲讲吧

来源：学生作业帮编辑：神马作文网作业帮分类：英语作业时间：2024/11/19 15:07:53

y accident 和by chance没有区别.
happened to do碰巧做某事,这是个动词句型,而上面的两个是介词短语.
请看：I met a friend of mine in the street by chance/by accident yesterday.=I happened to meet a friend of mine in the street yesterday.

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