新目标九年级Unit10SectionAPeriod3（GrammarFocus-4c）课件.ppt

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1、Unit10SectionAPeriod3GrammarFocus-4cReadthesentencespayingattentiontothecoloredparts.Whatareyousupposedtodowhenyoumeetsomeoneforthefirsttime?You’resupposedtoshakehands.You’renotsupposedtokiss.WhatarepeopleinKoreasupposedtodowhentheymeetforthefirsttime?They’resupposedtobow.Whenwerey

2、ousupposedtoarrive?Iwassupposedtoarriveat7:00.AmIsupposedtowearjeans?It’sveryimportanttobeontime.Itispoliteforboystoshakehandsandforgirlstokisseachotheronthesideoftheface.“besupposedto”的用法1.besupposedto意为“应该；被期望/期待;理应”，用来表示根据规定人们不得不做某事，或期待发生某事，时态、人称和句式的变化在be上体现，to为不定式符号，后接动词原形。2.be

3、supposedtodo的否定式，要在be后加not,此时相当于benotallowedtodo,意为“不被许可；不应当”。3.如果表达“过去某时应该(不应该)做”时，用was(wasn’t)/were(weren’t)supposedtodo,相当于should(shouldn’t)have+动词过去分词。besupposedtodosth.“应该做某事”,某人被期望做某事，主语通常是人,相当于beexpectedtodosth.，常用来提出建议，其否定结构为benotsupposedtodosth.。You’resupposedtogetthereear

4、ly.你应该早点到那儿。You’renotsupposedtosmokehere.你们不应该在这里吸烟。拓展:★当besupposedto的主语为“物”时，意为“本应，本该”，表示某事本应该发生而没有发生。Thetrainwassupposedtoarrivetenminutesago.火车应该在十分钟前到达。★当besupposedto的主语是人时，后面还可以接“have+过去分词”，意为“本应,应该”，表示本应该做某事而没做。YouaresupposedtohavearrivedinBeijingnow.你本应该现在已经到了北京了。besupposedt

5、odosth为系表结构，强调客观上有责任/义务作某事。Youaresupposedtocleantheblackboard,foryouareondutytoday.should强调主观上应该做某事。Youshouldstudyhard,foryouareastudent.besupposedtodosth.＆should的区别Whatareyousupposedtodowhenyouseeanoldmanfalldown?We’resupposedto…Whatareyousupposedtodowhenyougoacrosstheroad?We’resu

6、pposedto…Whatareyousupposedtodowhenyouseeathiefstealingsomeone’swallet?We’resupposedto…Whatareyousupposedtodowhenyoufindrubbisheverywhere?We’resupposedto…Whatareyousupposedtodowhensomeoneasksyouforhelp?We’resupposedto…Whenyougoabroad,it___________bringyourpassport.2.Afterclass,stud

7、ents_________cleanthechalkofftheblackboard.3.IfyouvisitthenortherncoastofNorwayduringthewinterseason,it____________packwarmclothes.BBB4aCompletethesentenceswiththephrasesinthebox.besupposedtobeexpectedtobeimportantto4.Iftherearepeopleinthemeetingroom,you__________knockbeforeenterin

8、g.5.InmanyeasternEuropeanc