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. 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 The past participle of the main verb the.
Happen To 后面跟的是人名、公司、或其他集合名次和代名词What Happened To You?It Happens To Everybody.
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. This is the present perfect, which is constructed using: 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 Helping Verb Have 2.
Here, what's is the contraction of what has.
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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
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. 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.
The Past Participle Of The Main Verb The.
Here, what's is the contraction of what has. This is the present perfect, which is constructed using: Happen to 后面跟的是人名、公司、或其他集合名次和代名词what happened to you?it happens to everybody.
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.
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.