九年级英语 Unit 4 Inventions and Inventors学案 北师大版VIP免费

Unit4InventionsandInventors【本讲教育信息】一.教学内容：Book15Unit4(I)学会用动词的被动语态描述物体的使用方法，构成成份和功能作用。二.教学重点：1.动词一般现在时被动语态。2.动词一般过去时被动语态。3.动词一般将来时被动语态。4.情态动词的被动语态5.重点词汇三.具体内容：（一）被动语态是动词的一种特殊形式，表示句子中的主语是动词的承受者，也就是动作的对象。一般说来，只有需要动作对象的及物动词才有被动语态。被动语态的用法：1）当我们不知道谁是动作的执行者时，或者没有必要指出谁是动作的执行者时，e.g.PrintingwasintroducedintoEuropefromChina.Anewbridgewillbebuiltherenextyear.2）当我们关心动作的承受者但也关心动作的执行者时，用by加动作的执行者。e.g.Thetownwasdestroyedbyanearthquake.英语动词的被动语态由助动词be+及物动词的过去分词构成。时态举例：1.一般现在时：Footballisplayedallovertheworld.EnglishisspokeninBritain,theUSandsomeothercountries.Roger,youarewantedonthephone.2.一般过去时：TheGreatHallofthePeoplewasbuiltin1959.Hislegwasbrokeninanaccident.TheInternationalwaswrittenin1871byEugenePotter,theFrenchworker-poet.3.一般将来时:Moreschoolswillbebuiltinmyhometown.Hewillbetakentohospitaltomorrow.4.情态动词的被动语态Themeatshouldbekeptinafridge.Ricecanbeboiledorsteamed.Thismaterialmustbehandledcarefully.Text:Thefirstpaperwas(make)inChinain105ADbyamancalledCaiLun.Theoldestpiecesofpaperstillexistedweremadeinabout150AD.Forover500yearstheartofmakingpaperwas(limit)toChina.In610,papermakingwas(introduce)intoJapan,andthenintoCentralAsiainabouttheyear750.PapermadeitsfirstappearanceinEgyptinabout800butitwasnot(produce)thereuntiltheyear900.Kites(know)inChinaabout3,000yearsago.Theywereusedinbattlestotransportsuppliestosoldierswhowereindanger.Wheelbarrows(invent)intheHandynasty.Theywereusedbybuilderstocarryheavysupplies.Inabattle,wheelbarrowswereusedtocarryinjuredordeadsoldiers.Gunpowder(discover)bytheChinesewhouseditformakingfireworkshundredsofyearsago.ItwasprobablyintroducedintoEuropefromtheMiddleEast.Umbrellas(invent)bytheChinese.Theyweremadefromoiledpaperandbamboo.RedandYellowumbrellas(use)byhigherclass,andblueumbrellaswereusedbythecommonpeople.Soccer(develop)inEnglandinthe12thcentury.Buthundredsofyearsbeforethis-around200BC-asimilargame(play)atthebeginningoftheHandynastyinChina.Magicsquaresareaveryoldtypeofnumberpuzzle.They(invent)inChinabeforetheendofthe1stcenturyAD.Inamagicsquare,nomatterfromwhichdirectionyouaddupthenumbers,theresultisthesame.Ex.Fillintheblankswithis,are.Cameraoftenusedwhenpeopletravel.Milkhadasmainfoodforbabies.Someadvicegivenbytheprofessor.Breadtakenthreetimesadayinthisfamily.Thesheepkilledbyagangofwolves.Theillteethtakenoutbythedentist.ThewatchesmadeinSwiss.Manypeoplehurtintheaccident.Policecalledatoncebythe2drivers.（二）重点词汇：1.switchonSwitchthelighton,please.Theovenisprogrammedforthecorrecttimeandthenswitchedon.2.absorbWaterisabsorbedintothesoil.Hewassoabsorbedbythebookthathefailedtohearthedoorbell.3.copyThispictureisacopyfromXuBeihong.Copythefollowingwordsintoyourexercisebooks.4.makeone’sappearanceShemadeherfirststageappearanceattheageof16.Hehasmadeanumberofappearancesontelevision.5.turnintoThemicrowavesareabsorbedbythefoodandtheyareturnedintoheat.6.nomatter常与what,who,when,which,whose,how连用Nomatterwhenhecomesagain,hewillbewelcomed.Nomatterwhoknocks,don’topenthedoor.Nomatterwhatproblemyouhave,turntome.Nomatterwhosebagitis,itwillbekepthereuntiltheownerreturns.7.bema...