过去进行时之when-和while的区别

Click to edit Master title style,Click to edit Master text styles,Second level,Third level,Fourth level,Fifth level,*,Click to edit Master title style,Click to edit Master text styles,Second level,Third level,Fourth level,Fifth level,Click to edit Master title style,Click to edit Master text styles,Second level,Third level,Fourth level,Fifth level,*,李华蓉,老师,过去进行时,中的,when,和while,湖南省石门县澧斓中学,rammar,What,was,Jay Chou,doing,at 8 this morning,?,He was,H,e,was,running.,from 8 to 9,yesterday,morning,She,was having,a Chinese class,.,When,Jim,called him up,When,Jim,called him up,he,was sleeping,.,While,Tom,walked to school,While,Tom,walked to school,he,was eating.,?,I was walking to school,when,I saw a cat in a tree.,When,Sally arrived home,her mother was cleaning the house.,主句的动作是持续性的，而从句动作是短暂性的，此时用,_,引导时间状语从句，主句用,_,时态，从句用一般过去时态。,when,过去进行,（一）,While,I was sleeping in the bedroom,my father came in,.,David fell,while,he was riding his bike.,主句的动作是短暂性的，从句的动作,是持续性的，此时用,_,引导从,句，主句用,_,时态，从句,用过去进行时态。,while,一般过去,（二）,While,Andy was waiting for the bus,he was reading a newspaper.,He was cleaning his car,while,I was cooking.,主句和从句的动作在过去的某时刻或某,段时间同时发生，而且动作都是持续性,的，此时用,_,引导从句，而且主,句和从句都用,_,时态。,while,过去进行,（三）,Exercise,when,or,while,?,1._the telephone rang,he was reading.,_ he was reading,the telephone rang.,2.Bob was sleeping _his mother was cooking.,3.I was studying here_the rainstorm came.,4.Dont use your phone_ you are driving.,When,短暂性,While,延续性,while,同时发生,when,延续性,while,短暂性,对照关系,when,和,while,用法小结,主句的动作是持续性的，而从句动作是短暂性的，此时用 引导时间状语从句，主句用 ，从句用一般过去时态,.,主句的动作是短暂性的，从句的动作是持续性的，此时用 引导从句，主句用 时态，从句用过去进行时态.,when,过去进行时态,while,一般过去,when,和,while,用法小结,主句和从句的动作在过去同时发生，而且动作都是持续性的，此时用 引导从句,而且主句和从句都用 时态。,while,过去进行,Homework,Fill in the blanks.,1.What _ you _(do)at 9 yesterday?,2.I _(watch)TV when my mother _(come)in.,3.He_(do)his homework at 9 this morning.,4.The children_ (play)soccer at 4 yesterday,afternoon.,5.The baby_(sleep)when her mother came back.,Thanks!,知识回顾,Knowledge Review,祝您成功！,