Unit 4 Period 1 课件.ppt

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1、Unit4OxfordEnglishModule2Man’sbestfriendsSavethetreesPeriod1ReadingInthisunit,wearegoingtotalkaboutanotherofman’sbestfriendsonEarth,trees.1BackgroundknowledgeHowmuchdoyouknowabouttrees?Trytheshortquizbelow.fruitbranchleafrootBrainstormingWhatdotreesdoforus?Tre

2、esaremajorfightersagainstairpollution.Treestakeinharmfulgasesfromtheairandproduceoxygenforustobreathe.Lookatthepicturesonpage45.Thenanswerthequestionbelow.Treestakeinharmfulgasesfromtheairandmakeoxygenforustobreathe.2BeforeyoureadLookatthetitleoftheinterviewon

3、page45.Thenanswerthequestionbelow.Manyofthethingsinourdailylivescomefromtrees.Forexample,paperpencils,andchairs.3ReadingTreesinourdailylivesRebeccawantstoknowmoreabouttreesandhowtheyhelpus.SheisinterviewingDrJonesabouttrees.Readthefirstpartoftheconversationand

4、answerthefollowingquestion.1.Theykeeptheaircoolandclean.keepsth.+adj.使某物保持怎样的状态Ourteachertriedmanywaystokeepusactive.我们老师用很多方法使我们活跃。2.Theytakeinharmfulgasesfromtheair…harmful是个派生词，即词根+后缀（suffix），意为“有害的”，其名词形式是“harm”beharmfulto对……有害Smokingisharmfultoyourhealth.

5、吸烟有害身体健康。takein意为“吸收”。与takein有关的短语：拿出来拿走随身携带某物takeouttakeawaytakesth.withsb.3.Theyaremajorfightersagainstairpollution.major意为“主要的”。fightagainst意为“与……作斗争”。fightfor意为“为……而战”。Weshouldtryourbestto___________noisepollution.Peopleusedto________freedomandequalrights.

6、fightagainstfightforWhyaretreesmajorfightersagainstairpollution?ComprehensionTheykeeptheaircoolandclean.Theytakeinharmfulgasesfromtheair.Theyproduceoxygenforustobreathe.Readthesecondpartoftheconversationandanswerthefollowingquestion.4.…treesalsomakeourlivesmor

7、econvenient.makesb.+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.furniture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.Weshouldstopdoing

8、thisifwedon’twantaworldwithouttrees.stopdoingsth.意为“停止做某事”。stoptodosth.意为“停下来去做某事”。Youlooktired.Whynotstop________(have)arest?Ishouldstop________(have)arestnow.Ihavelotsofhomeworkt