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Manyinventionschangedourlives.TheAmericansinventedthe.TheBritishinventedthe.___inventedthe.inventedthe______.CaiLunBellinventedthe____.EdisonWhichisthetopicsentence?(哪一句是中心句？)WeknowTip:Topicsentenceisasentencewhichoftengivesusasummaryoroverallmeaning.It’susuallyatthebeginningortheendoftheparagraphorpassage.中心句是能给我们概括出中心意思的句子。它通常在段落和文章的开头或结尾处。PicturereadingWhatdothepicturestellus?PicturereadingWhatdothepicturestellus?StoryreadingReadthewholestoryanddivideitintothreeparts.读故事，为每个部分找到相应页码。Whoinventedtherubberheadpencil?StoryReadingReadandfindoutwhyheinventedit.（为什么他想到要发明呢？）StoryReadingLipmanspentalotoftimelookingforthetinypencilandthetinyrubber.Hewasunhappy,becausehedidnotwanttowastehistimedoingthis.Thenhehadagoodidea.Hecouldputtherubberandthepenciltogether,sotheywouldnoteasilybelost.Ifyouwerehim,whatwillyoudotoputthemtogether?Readandlocatetheinformation（读并定位信息）Howdidheputthemtogether?Finally,hecameupwithagoodway.Heusedapieceofironsheettofixthem.Therubberdidnotgetlooseanymore.apieceofironsheetdidn’tgetloose=fixtherubbertothepencilfirmlyHowmanywaysdidhetry?TrytosayHetriedmanydifferentways,butfailed.Atfirst,heusedsilktobindtherubbertothetopofthepencil.Itworked!Hewentondrawinghappily.However,therubberfelloffafterawhile.PoorLipman!StoryReadingReadandthinkWhat’sthetopicsentenceofthisstory?Youcanobserveandthinkmore,andmakeadifferencetoo.TheAmericansinventedtheaeroplane.TheBritishinventedthetrain.Bellinventedthetelephone.CaiLuninventedthepaper.Edisoninventedthelight.Nowweknow____________invented______________.HymenLipmaninventedtherubberheadpencil.Doyouwanttobeaninventor?Youcanobserveandthinkmore,andmakeadifferencetoo.Manyinventionschangedourlives.HomeworkMakeareadingcard.Readingcardscanhelpusunderstandthestoriesandsharethemwithotherseasily.Let’sreadandmakemore!