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构成的过去时短语. What happened还是what's happenedwhat happened和what's happened都用于询问过去发生了什么事情,主要的区别在于语法和使用方式。what happened是一个过去时态的简单
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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.
This is the present perfect, which is constructed using: Here, what's is the contraction of what has. 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. What happened 和 what's happened两者的区别: 是问 what happened?只是想知道过去所发生的事情, 而如果用what's happened?则强调对现在的影响。,即想知道过去所发生的什么事导致了说话时.