was doing 比如说,As my father (was leaveing) the house ,the postman (arrive) 第一个括号里为什么要用 was doing

was doing 比如说,As my father (was leaveing) the house ,the postman (arrive) 第一个括号里为什么要用 was doing I was doing mu homework____the telephone rang,It was my auntAwhen Bwhile Cas Das soon as I was doing some shopping ____ I saw my old friends yesterday afternoon (when/while/as) 选择：( )1._____ Mom got into the house,I was doing my homeworkA.BeforeB.AfterC.WhenD.As soon as 一道选择题28.2______ my mother came back,I was doing my homework.A.As soon asB.WhenC.WhileD.Since ___ I was doing the laundry,my brother was playing with his pet dog in the gardenA WhenB AsC WhileD As soon as I was doing my homework_____ the light went out.A .when B.as C.while D.since i was doing my homework when my mom came 英语难题3（请从语法角度详解）非常感谢~33.as I ______ housework,my husband_____ asleep.A.did…was falling B.was doing…fell C.was doing…was falling D.was doing…falls46.the number of the people speaking English_______.A.is risin I'd go to the seaside for a holiday with my family as soon as i _what i was doing.选项是1would finish2had finish3 was finishing4 finished 哪一个呢? 英语翻译My friends like doing the same thing as I do My friends like doing the same thing as I singing someone doing heard my honework while was I 老师说,while在句子的中间时,左边和右边都可以是过去进行时.到底是什么啊比如说 I was doing my homework while my mother was doing housework.这句话是错的还是对的,如果改的话要怎么改 I was doing my homework when he came in.(对I was doing my homework提问） one saturday ,i was doing my homework whileone saturday ,i was doing my homework while it、、、、、 这篇改错答案 i was doing my homework while my mother (was cooking)为什么不填cooked I was doing my homework while my father was reading newspapers为什么填while as soon as 引导后加过去时表示过去将来 这句话里为什么用完成时I will start writing my next paper as soon as i have finished this one和I decided to go to the library as soon as i finished what i was doing 一个后面加过去