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的事情对当前.
This is the present perfect, which is constructed using: Here, what's is the contraction of what has. The past participle of the main verb the meaning is. 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.
Judge Judy’s court America’s favorite judge now dominates streaming