Unit 4 Topic 1 Section A 课件 1.ppt

Unit4AmazingScience,Topic1Whenwasitinvented?SectionA课件1,Letslearn,rkt,metl,stlat,spesp,lptp,ddtl,lk,椅子是被木头做成的.,Thechairismadeofwood.,chair,wood,make原形,made过去式,made过去分词,be,纸是由木头做成的,Thepaperismadefromwood.,paper,wood,Thechairismadeofwood.,bemadeof由某种材料做成看得出原材料，是物理变化,bemadefrom由某种材料做成看不出原材料，是化学变化,lock,metal,A:Whatsthelockmadeof?B:Itsmadeofmetal.A:Whatsitusedfor?B:Itsusedforlockingthedoor.,bread,wheat,A:Whatsthebreadmadefrom?B:Itsmadefromwheat.A:Whatsitusedfor?B:Itsusedforeating.,wi:t,Exercise,1.wallbrick(砖)brk2.housesstones(石头)stn3.icewater4.winerice(大米),Thewallismadeofbrick.,Thehousesaremadeofstones.,Theiceismadefromwater.,Thewineismadefromrice.,5.paperwood(木头)6.salad(沙拉)bananasandapples7.bottlesplastic8.sweatercotton(棉花),Thepaperismadeofwood.,Thesaladismadeofbananasandapples.,Thebottlesaremadeofplastic.,Thesweaterismadefromcotton.,A.Whatsitmadeof?B.Itsmadeofmetal.A.Doyouknowwhatitisusedfor?B.Itsusedforsendingsatellitesorspaceshipsintospace.,Wow!Amodelrocket!,1aListen,lookandsay.,1bListento1aandmarkT(True)orF(False).,Janeisunhappybecauseshewasnotallowedtogotoapartylastnight.()Kangkangsfathermadeamodelrocketforhim.()Therocketismadeofmetal.()Arocketisusedforsendingsatellitesorspaceshipsintospace.(),F,F,T,T,Keypoint,1.allowv.允许la1）beallowedtodosth.被允许做某事2）allowdoingsth.允许做某事3）allowsb.todosth.允许某人做某事,2.bemadeof由某种物质做成(看得出原材料，物理过程)bemadefrom由某种物质制成(看不出原材料，化学过程),bemadebysb.由某人制造bemadein在某地制造bemadeupof由几部分组成bemadeinto被制成,3.1）beusedfordoingsth.=beusedtodosth.被用来做某事2）usesth.todosth.使用某物去做某事,3）beusedas被用作4）usedtodosth.过去常做某事5）beusedtodoingsth.习惯做某事,4.比较一般现在时态与一般过去时态的被动语态一般现在时态的被动语态结构：be(am/is/are)+动词的过去分词一般过去时态的被动语态结构：be(was/were)+动词的过去分词,Practice,Mymotherallowsme_(play)computergamesonSaturday.2.Themodelplane_(make)bymyfatheryesterday.,toplay,wasmade,用所给词的适当形式填空。,Ourteachersdontallow_(give)uplearningEnglish.Mariawasallowed_(visit)Beijing.Thelockisusedfor_(lock)thedoor.,giving,tovisit,locking,Homework,Supposeyou