时间状语从句(公开课获奖课件.pptx

Examplesinourtextbook一、when/while辨别1.when表达主从句两个动作同步发生或先后发生。而while表达主从句两个动作同步发生或强调主句动作在从句动作进行期间发生。(1)______theyarewaitingfortheNewYear,theylistentomusic,singsongsanddance.(2)______theboysawhismother,hestoppedcrying.2.when+短暂性动词或延续性动词while+延续性动词(一般为bedoing。)(1)Hewasdoinghishomework______Isawhim.(2)Pleasedon’ttalksoloud______othersareworking.3.进行时+while+进行时Shewasdancing_______Iwassinging4.从句动作和主句动作同步发生，且从句动作为延续性动词时，when，while，as都可使用___________shewassinging,wealllostourselvesinherbeautifulvoice.注意：延续性动词表达动作可以延续，如：keep保留，维持；walk走路；read阅读等；非延续性动词也称瞬间动词，所示动作不可以延续。如：hear听到；return偿还；see看见。3.用while,when填空：_______________waswalkingdownthestreet，Isawsomepolicemen．_______theyheardthenews，theyweresurprised．______thechildwasplayingwithhistoys，hisparentswerewatchingTV.Theyshoutedslogans___theypassedthesquare.总结：相称于andatthis/thattime。意思为“正在/刚要……这/那时（忽然……）”bedoing/begoingtodosthbeabouttodosth.hadjustdoneExercise5.–Washisfatherstrictwithhimwhenhewasatschool?–Yes.Hehadneverpraisedhim_____hebecameoneofthetopstudentsinhisgrade.A.afterB.unlessC.untilD.when6.Hewasabouttotellmethesecret_____someonepattedhimontheshoulder.A.asB.untilC.whileD.when7.Hehaslivedinthecity_______hecamebackfromAmerica.A.whenB.beforeC.sinceD.after8.Wewon’tleavehere_______ourteacheresback.A.untilB.sinceC.afterD.assoonas9.Ihadtofinishthepicture________mymothercameback.A.untilB.beforeC.afterD.while10.Johnfellasleep________hewaslisteningtothemusic.A.afterB.beforeC.whileD.assoonas四、时间状语从句其他引导词小结：用括号内动词对旳形式填空1.Mymother___________(cook)dinnerwhenI_______(get)homelastnight.2.I_________(meet)LinglingwhenI___________(walk)alongthestreet.3.Lily_________(listen)tomusicwhileLucy__________(read)astorybook.4.Whentheteacher_________(e)in,thestudents_____________(talk)5.He_________(call)youassoonashe____(get)toGuangdong.HomeworkThankyou!