While my brother was playing the guitar ,my sister listened to music.哪里错了

My brother was watching TV when my mother came back（用while改写） While my brother was playing the guitar ,my sister listened to music.哪里错了 my brother was singing while my mother was cooking= my brother was singing when my mother was cooking= while my mother was cooking,my brother was singing = when my mother was cooking,my brother was singing 语法都对吧 My brother fell while he was riding his bicycle and hurt himself.这句话里面 hurt While I was watching TV,my brother come in.（同义句） I was doing my homework while my brother was playing piano in his room.翻译成汉语 I was doing my homework while my brother was playing games的game为什么要加s i was watching tv while my brother was playing computer gameswhile……games画线,画线提问 My brother was watching TV_I was reading a book.A.if B.while C.until D.however 逗号的用法:While I was having dinner,my brother was packing.While I was having dinner,my brother was packing.是否可以：While I was having dinner my brother was packing.如 toddzhang123 老师的提议，这句话可以不使用逗号，而 （） I （） making my breakfast,my brother （） listening to the radio用was,were,when,while填空 My sister was against my suggestion while my brother was ____ it.A.in favor of B.in memory of C.in honor of D.in search of My brother was reading while I did my homework.while后面不是接延续性动词吗,为何用did my homework?My brother____ while I ____.A.reads;was doing my homework B.read;did my homeworkC.was reading;was doing my homework D.was reading;did my ho 1 he told me to rest for a while .' ___for a while' he sail .A to rest B rest C do you rest D resting 选哪个2 he asked me hou my brother was 'how ___?' he asked.A is your brother B your brother was C your brother is D was your brother 3 the one wi Home AloneIt was Sunday afternoon．My brother and I were alone at home．My parents went for a party and asked me to look after my brother．I was doing my homework while my younger brother was watching TV．Suddenly the doorbell rang．Ding-Ding!My my brother was fond of playing football,__my sister liked going swimming.空格处为什么要填while?这是并列句吗? 1 .My brother fell while he was riding his bicycle and hurt himself.2 .It was raining when they left the station.3 .When I got to the top of the mountain,the sun was shining.翻译 My brother _____ while he _____ his bike and hurt himselfA.fell was riding B.fell were riding C.was falling rode D.was falling riding 选哪个?为什么?