He fell asleep while (he was) doing his homework这里的he was被省略了 这是什么语法?Thanks

he fell asleep while he was listening to music 为什么用while I fell asleep while thinking of He fell asleep while (he was) doing his homework这里的he was被省略了 这是什么语法?Thanks 急 连词成句 1 he,asleep,fell,while,his,doing,homework 2 mouth,going,Danny,hide,is,to,an,in,egg,his he too fell asleep 的意思是不是和 he fell asleep,too 的意思一样,什么情况下会用? I FELL ASLEEP while watching tv.这句是不是完整的应该是：I FELL ASLEEP while I WAS watching tv.后面是过去进行时吧?I FELL ASLEEP while watching tv.为什么可以这么省略的写? 过去进行时中过去进行时中when与while的区别及用法(最好举例说明)1.He fell asleep ( )he was reading.A.while B.when C.both A ahd B 同义句转换：My sister fell asleep while she was watching TV last night.My sister fell asleep while she was watching TV last night.My sister fell asleep ( ) ( ) TV last night 同义句转换：My sister fell asleep while she was watching TV last night.My sister fell asleep while she was watching TV last night.My sister fell asleep ( ) ( )was watching TV last night. 十道英语选择题请求高手指教1.John fell asleep while he was listening to the music.请问句中为什么可以用while?难道说fell asleep是延续性动词?2.The teacher found her ___ girl.a.clever b.a clever c.was a clever d.is a clever fell asleep 改写同义词 I fell asleep while reading the English textbook.Luckily,my roomate woke up in time.fell asleep的动作发生在woke up之前,为什么不用过去完成时. 判断下列句子中while的含义：1、Jane was dressed in brown while Mary was dressed in blue.2、While I admit that the problems are difficult,I don't agree that they cannot be solved.3、He fell asleep while(he was) reading a grammar book. He didn't arrive until the meeting was nearly over,for the simple reason is thathe () asllep while watching TVhad fellen/has fellen/fell/was fallingfall asleep有哪些时态? He fell asleep when he was reading when之后可以接过去进行时吗 No sooner had he gone to bed than he fell asleep.的原语序是? He was so tired that he fell asleep halfway through reading.翻译 同义句转换：He soon fell asleep.He soon ____ ____ ____.