安徽省灵璧县崔楼中学八年级英语下册 Unit 3 What were you doing when the UFO arrived（第二课时）课件 人教新目标版.ppt

unit3whatwereyoudoingwhentheufoarrived?,sectiona2a-2c,第二课时(sectiona2a3b)让学生齐唱“ifyouarehappy”,活跃气氛.值日生上台汇报上节课布置的作业,然后完成2a,2b的练习.接着利用图片重点对when和while的用法作比较并总结.并做一个小练习.然后阅读3a的电子邮件,为图片排序.并按次序复述故事.,whatwereyoudoingwhentheufoarrived?,a:iwasstandinginfrontofthelibrarywhentheufoarrived.,a:whatwereyoudoingwhentheufoarrived?b:iwassleepinglateinmybedroomwhentheufoarrived.,whatwereyoudoingwhentheufoarrived?iwascookingdinnerinthekitchenwhentheufoarrived.,whatwereyoudoingwhentheufoarrived?iwascuttinghairinthebarbershopwhentheufoarrived.,whatwereyoudoingwhentheufoarrived?iwasgettingoutoftheshowerfromthebathroomwhentheufoarrived.,whatwereyoudoingwhentheufoarrived?,studyforthetest,whatwereyoudoingwhentheufoarrived?,haveaparty,whatwereyoudoingwhentheufoarrived?,fishnearthebeach,whatwereyoudoingwhentheufoarrived?,climbthemountains,whatwereyoudoingwhentheufoarrived?,stayinthelibrary,whatwasshedoingwhentheufoarrived?,takingabath(inthebathroom)studyingenglish(intheclassroom)takingawalk(nearmyhouse)talkingwithmytutor(atthestreetcorner)climbingthemountainbuyingadictionary(atthebookstore)comingtoschoolwithpeter,whatwereyoudoingwhentheufoarrived?,eatinglunch(atschool)goingtothelibrarymakingasmoothie(inthekitchen)shouting(ontheplayground),2alistenandorderthesestatements1-5.,thealienvisitedthemuseumofflight.thealienboughtasouvenir.aufolandedoncenterstreet.thealienwentintoastore.analiengotoutoftheufo.,alien外星人,buy-bought,land着陆,get-got,1,2,3,4,5,2blistenagain.completethefollowingsentenceswith“when”or“while”.,theboywaswalkingdownthestreetaufolanded.2.thegirlwasshoppingshesawthealiengetout.3.thealienwasbuyingasouvenir,thegirlcalledthepolice.4.thealienwasvisitingthemuseum,theboycalledthetvstation.,when,when,while,while,当的时候,reporter:so,canyoutellmewhatyousawheretoday?boy:well,iwaswalkingdowncenterstreetwhenaufolanded.reporter:wherediditland?boy:righthere.,reporter:sowhathappenednext?girl:analiengotoutoftheufo.reporter:whatwereyoudoing?girl:whenthealiengotoutoftheufoiwasshopping.reporter:thenwhathappened?,boy:well!thenthealienwentintoastore-doyouseethestoreoverthereandboughtasouvenir.girl:thenitvisitedthemuseumofflightongreenstreet.reporter:so,whatdidyoudo?,girl:whileitwasbuyingasouvenir,icalledthepolice.boy:andwhileitwasvisitingthemuseum,icalledthetvstation.reporter:sowhathappenednext?,thinkandcompare,.theboywaswalkingdownthestreetwhenaufolanded.whiletheboywaswalkingdownthestreet,theufolanded,whilethegirlwasshopping,thealiengotout.thegirlwasshoppingwhenthealiengotout.,iknow:,1.while当时候(后面跟的动作延续,多用进行时态)2.when当时候(后面跟的动作不延续,多用过去时态）,whateachpersonwasdoingwhentheufolanded.makesentencewith“when”andwhile”thenimaginewhatyouweredoing.,a:whatwasthegirldoingwhentheufotookoff?b:whilethegirlwasc:whentheufotookoffthemanwas,reporter,exercises,choose“when”or“while”tofillintheblanks.(1)iwaswalkinginthestreet_theaccidenthappened.(2)_iwasdoingmyhomework,thetelephonerang.(3)_itwasraining,theplanetookoff.(4)_theteacherwasspeakingtoclass,nickstoodupsuddenly.,1.weweretalking_theteachercameintotheclassroom.2.iwassinging_hewasdancing.3._iwascuttinghair,theufolanded.4.theboyswereplayingbytheriver_tomfellintotheriver.5.mymotherwaswashing_myfatherwascooking.6.whatwereyoudoing_theufoarrived?,when,when,when,while,while,while,makesentenceswithwhenorwhile,i/hewaswhen/whiletheteachercameintotheclassroom.,when/whilei/hewas.,thetelephonerang.,pleaseremember,donttouchit,whilethedogissleeping.,-不要惹事生非,whilethereislife,thereishope.,生命不止，希望不灭,pairwork:,wherewas/were_whenmissqiuvisited?,whatwas/were_doingwhenmissqiuvisited?,1)过去进行时表示过去正在进行的动作,而一般过去时则表示一个完整的动作。如：theywerewritingletterstotheirfriendslastnight.昨晚他们在写信给他们的朋友。(没有说明信是否写完),theywroteletterstotheirfriendslastnight.他们昨晚写了信给他们的朋友。(表达了他们已写好的意思,整个写的过程已完成。),2)当动作延续较长时间时或表示厌烦、赞美等感情色彩时,常用过去进行时表示。如：hewasthinkingmoreofothersthanofhimself.他考虑别人的比考虑自己的多。(表示说话者赞扬的口气),theboywasalwaysmakingtroublethen.那时,他总是惹麻烦。(表示说话者厌烦的口气）3.iwasgettingoutoftheshower.我正洗完澡出来。“getout”出来,getoutof从出来,4.iwaswalkingdowncentrestreetwhenaufolanded.walkdown/along沿着走land“着陆、下降”,动词。takeoff“起飞”e.g.theplanelandedsafely.,5.thegirlwasshoppingwhenthealiengotout.whilethegirlwasshopping,thealiengotout.when与while区分：,(1)“当的时候”,如后面连接的动词为进行时态,则用while多于用when。而when通常与瞬间性动词或延续性不强的动词连用。(2)如果while前后的动词都是进行时态,while可译为“与此同时”iwasreadingwhilemybrotherwasdrawing.,(3)当while前后的句子描述的情况相对或相反,while可译为“而”,while更强调并列的对比而非转折。e.g.iamout-goingwhilemysisterisquietandshy.,总之,when表示做某种动作的时间或瞬间,由其引导的时间状语的时态如果是一般过去时,其主句通常要用过去进行时。while表示略长的一段时间,由其引导的时间状语从句用过去进行时,而主句时态根据实际情况而定。,6.ihadaveryusualexperienceonsunday.experience可数名词,“经历”。anexperience一次经历。7.ifollowedittoseewhereitwasgoing,andiwasverysurprisedwhenitwentintoasouvenirshop.,8.isntthatamazing!