ohh what happened?怎么回答?

ohh what happened?怎么回答? what's happened 中的“s”是has吗?还是is?还是was?还是什么?what's happened和what happened有区别吗?如果别人问what's happened应该怎么回答?问what happened又该怎么回答? What had happened?What had happened?What had happened? 是What happened 还是what’s happened what happened=what's happened吗? what happened to 和what happened happened your to what head 怎么连词成句 what happened to you?是问句,怎么没有助动词? He asked,What has happened to you?变为间接引语该怎么变是He asked what had happened to me.还是He asked what I had happened . general statement of what happened when请问这句短语如何翻译?尤其是what happened when这一部分怎么讲? 英语翻译This makes what happened last Saturday even more disappointing.怎么翻译?其中 what happened last Saturday 充当什么成分? what happened at last? what happened on What Happened to Us what happened then Dear,what happened to what happened to she what happened to him?