过去进行时之when和while的区别.ppt

过去进行时之when和while的区别

rammar

WhatwasJayChoudoingat8thismorning?

Hewas…

Hewasrunning.

from8to9yesterdaymorningShewashavingaChineseclass.

WhenJimcalledhimupWhenJimcalledhimup,hewassleeping.

WhileTomwalkedtoschoolWhileTomwalkedtoschool,hewaseating.

?

①IwaswalkingtoschoolwhenIsawacatinatree.②WhenSallyarrivedhome,hermotherwascleaningthehouse.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）

③WhileIwassleepinginthebedroom,myfathercamein.④Davidfellwhilehewasridinghisbike.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）

⑤WhileAndywaswaitingforthebus,hewasreadinganewspaper.⑥HewascleaninghiscarwhileIwascooking.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）

Exercisewhenorwhile?1._____thetelephonerang,hewasreading._____hewasreading,thetelephonerang.2.Bobwassleeping_____hismotherwascooking.3.Iwasstudyinghere______therainstormcame.4.Dontuseyourphone______youaredriving.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

HomeworkFillintheblanks.1.What____you____(do)at9yesterday?2.I___(watch)TVwhenmymother___(come)in.3.He____(do)hishomeworkat9thismorning.4.Thechildren_______(play)soccerat4yesterdayafternoon.5.Thebaby______(sleep)whenhermothercameback.

Thanks!