Happened是一个完整的句子，简单过去时来表示过去发的事情。 它是一个独的句子，不需要其他文本或上下来支what's happenedwhat has happened的缩形式，使用现在完成表示去发生. Here, what's is the contraction of what has. Bleeding love 流血的爱 closed off from love 从爱情中解脱 i didn’t need the pain 我不想再痛苦 once or twice was enough 一两次就够了 and it was all in vain 但是一切都是徒劳 time starts.
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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. 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. Here's a list of texting abbreviations to help you succeed in any online talk.
It so happened that的句式happen表示“碰巧或恰巧发生某事”时,可用“it happens / happened that.”这一结构来表达.例如： it happened that brian and peter were at home that day.碰巧.
The past participle of the main verb the. This is the present perfect, which is constructed using: What are the most popular internet abbreviations and how to use them correctly? 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。
The helping verb have 2. 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
