The past participle of the main verb the meaning is. 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. 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.
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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.
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 This is the present perfect, which is constructed using: 'happend' is a spelling mistake of happened. The helping verb have 2.
A clear guide to using the in, on, and at prepositions. 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?
