What Happened To Joan Porco? Her Unseen Path Since The Porco Case Today. Is Still Alive 2025 John A Williams

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. The past participle of the main verb the. There happened to be是由there be句型演变过来的，仍是there be结构； it happened to be.，意思是：结果碰巧是.

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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。

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

例句：there happened to be a telephone booth. This is the present perfect, which is constructed using: When describing an event in the past speech, should i use present or past tense for happen. '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构成的过去.