what happened 和what is happened表达的意思一样吗

what happened/what was happened/what is happened/what happen what happened ?和what has happened ?的区别 What has happened和What happened的区别 what happened 和WHAT IS HAPPEND的区别 what happened和what is going on 的区别 What happened和What had happened意思 区别?使用的区别,在什么情况下使用? what happened=what's happened吗? what happened what has happened What happened to the brothers?的意思 what is wrong had happened? what happened?和 what's happening?是不是意思差不多?, what happened 和 what is happened 到底有什么区别 是不