谁能解释来一下为什么是what happened to you而不是what was happened to you?

what has happened to you What happened to you .翻译 求：What happened to you? What happened to you?翻译 Can you d__ what happened to you Do you know what was happened to him. what happened with you? 还是 what happened to you? 哪个是对的? ----what happened to you this morning? what happened to you?如何翻译 what happened to you的同义句 what happen to you还是what happened to you? 英语翻译What happened to you；What happened to you (where are you