英语语法高手进!I have no idea what ( was happening ) while I was as

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英语语法高手进!
I have no idea what ( was happening ) while I was asleep
Andy still does not know what ( happened ) in his hometown while he was away
这两个句子中为什么happen 形式不一样?
这应该while 有关
有什么区别啊?

happen的不同应该与两句话的时态有很大的关系
第一句最重要的信息还是while i was asleep,说明我困惑于我正在睡觉时发生了什么事,这里的happen与后面的句子时态保持一致,用过去进行时
第二句话最重要的信息是while he was away,说明（我）不知道在他离开的那段时间他的家乡发生了什么事.他注重的只是发生了事情而已,并没有强调是在什么时候发生的而已.away只是一个动作而已,他并不具有延续性；而第一句话则着重点明了是在我睡觉的时候.

I have no idea what _____when I was asleep.A is happening B you have no idea how worried i was翻译He has no idea what a re I have on idea what ___(happen) while I was sleep I have no idea what——when l was away You have no idea （）worried I was You have no idea how ___(worry) I was. 宾语从句特殊情况I have no idea what was the matter with是否变陈述语序 I have no idea what to I have no idea what do you You have no idea what I feel i have no idea which was better so I took ___ of them 代词 i have no idea which was better so I took ___ of them A.any