“ What happened next?"算一个句子吗?为什么没有助动词?

What happened next?这句话对吗?为什么要用happened如果是what happens next?或者what will happen next? “ What happened next?算一个句子吗?为什么没有助动词? John tells us in his own words what ___ next.A.happened B was happened What happened?am I grow up?What will happen the next? 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 What happened to the thief later?The king had hWhat happened to the thief later?The king had him____ the next day.A.hung Bhanged Chang Dhanging 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? What happened then. What happened then 翻译