2023学年完整公开课版《Unit4Savethetrees》

Unit4Savethetrees第二课时Checking-upWhyaretreessoimportantinourdailylives?RevisionReadaparagraphabouttheimportanceoftrees.Completeitwithappropriatewords.Treesmakeourlivesmorec__________.Forexample,thew______inyourpencil,thepaperinyournotebookandthef_________inyourhouseallc______fromtrees.Treestakeinh_________gasesfromtheairandp________oxygen,sotheyareveryu______.Itishardtoi__________aworldwithouttrees.onvenientoodurnitureomearmfulroducesefulmagineTopicsentencesTreesarereallyinourdailylives.Theyhelpusinmanyways.UsefultreesProductsfromtreesTreesindangerFactsPeoplecutdowntreeseveryyear.Whattodo?Weshouldstopsomanytrees.importantmillionsofcuttingdownfurniturefruitandoilpapersandpencilsteaVocabularyproduceagainstfurnitureconvenientmajorBrainstormingOurpromisesIngroups,talkaboutwhatyoucandotosavetrees.OurpromisesIpromisetowriteonbothsidesofthepaper!Ipromisenottocutdowntrees!Ipromisetoplantmoretreesinthefuture!Ipromisenottousethrowawaychopsticks!…-fulLookatthesetwosentences.Doyouknowthemeaningsof“useful”and“harmful”?Treesgiveusalotofusefulthings.Treestakeinharmfulgasesfromtheair.“Useful”and“harmful”bothendin-ful.Itisasuffixmeaning“fullof”.StrategystudyCanyouguessthemeaningsofthefollowingwords?hopefulhelpfulCanyougivesomemoreexamples?1.Theykeeptheaircoolandclean.L4keepsth.+adj.使某物保持怎样的状态

我们的老师使用多种方法使我们活跃。Ourteachertriedmanywaystokeepusactive.Languagepoints2.Theytakeinharmfulgasesfromtheair…harmful意为“有害的”，其名词形式是“harm”beharmfulto对……有害吸烟对你的身体有害。Smokingisharmfultoyourhealth.2.Theytakeinharmfulgasesfromtheair…takein意为“吸收”。与take有关的短语：拿出来拿走随身携带某物Notestakeouttakeawaytakesth.withsb.3.Theyaremajorfightersagainstairpollution.1.Weshouldtryourbestto________noisepollution.2.Peopleusedto________freedomandequalrights.fightagainst意为“与……作斗争”。fightfor意为“为……而战”。fightwith意为“与…一起作战”。fightagainstfightforNotes4.…treesalsomakeourlivesmoreconvenient.Notesmakesb.+adj.意思是“使某人感到……”。Thegoodnewsmademymumhappy.这个好消息使妈妈感到很开心。5.Alotofthefurnitureismadeofwood.Notesfurniture意为“家具”，是不可数名词。bemadeof表示“用……制作（看得出原材料）”bemadefrom表示“用……制作（看不出原材料）”Thedeskismade________wood.Paperismade________wood.offrom6.Weshouldstopdoingthisifwedon’twantaworldwithouttrees.Notesstopdoingsth.意为“停止做某事”。stoptodosth.意为“停下来