The past participle of the main verb the meaning is. Happened to /happened with 区别区别只有一点，就是指意不同：1、happen to sb“某人发生了某事”。可指坏事，也可指好事。例句：what's happened to her? Here, what's is the contraction of what has.
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What happened?和what's happening?的区别是什么？what happen?表示发生了什么，用于询问发生了什么事情，通常用于过去的事件或突发情况。而what’s happening?表示正在发生什么，用于
The helping verb have 2.
表示“某地 (某时)发生了什么事”，常用“sth.+ happen +地点/时间”这一结构来表达，此时主语应是事情。例如： the story. 接下来让我们看下what happen和what happened的用法区别： 1.词性：what happen是用原形动词happen构成的现在时短语，而what happened是用动词happen的过去式happened构成的过去时短语. Learn the time and place to use each with helpful guidelines and examples. 'happend' is a spelling mistake of happened.
接下来让我们看下what happen和what happened的用法区别： 1.词性：what happen是用原形动词happen构成的现在时短语，而what happened是用动词happen的过去式happened构成的过. A clear guide to using the in, on, and at prepositions.
