While he was piaying on the Great Wall,he took a lot of photos.1.为什么这句用while,而不用when.2.phone是延续动词还是短暂动词

While he was e() While he was piaying on the Great Wall,he took a lot of photos.1.为什么这句用while,而不用when.2.phone是延续动词还是短暂动词 He was piaying a game ________ his fathers computer. while he was studing为什么要was He was listening to music while he was playing computer games.(while改成动名词作状语.). While he was waiting for the bus, he was reading a newspaper.为什么用while引导 He was watching TV while his wife was washing dishes. While he was _____ hair,he called me. he fell asleep while he was listening to music 为什么用while He fell of the bike while riding还是while he was riding?是不是都对? when he was child可以用while替换吗 he likes piaying baskeball改成一般疑问句 He is friends piaying with his cards. He is piaying football改成否定句急啊 He got excited at the news,while I was calm.为什么用while ,不用when go on与什么词组相近He went on writing even while he was ill.He didn't ________ _________ writing even while he was ill. 一道改变句型He went on writing even while he was ill.He didn't ______ __________ writing even while he was ill 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