Unit2Topic1SectionA

Unit2SavingtheEarth,Topic2Alltheseproblemsareveryserious.,SectionA,pollution,manytrees,cutdown,forestsgone,washtheearthaway,冲走,changeintodesert,转换成，变成,沙漠,e.g.Alotofrichlandhaschangedintodesertbecausepeoplehavecutdowntoomanytrees.,sandstorms,comeintobeing,n.沙尘暴,Theboyandgirlsaretalkingabout.differenttypesofsandstormsthereasonsforsandstormssandstormsindifferentcities,1bListento1aandchoosethebestanswer.,Focusonthemainideaoftheconversationwhenyoulistenforthefirsttime.,Listenandanswerthequestions,1.Whatstheweatherliketoday?Itsbad.Thewindissostrong.Andthesandreallyhurtsface.2.Whatcausesthesesandstorms?Peoplehavecutdowntoomanytrees.Asaresult,alotofrichlandhaschangedintodesert.3.Dowestillneedtodosomethingtoprotecttheenvironment?Yes,wedo.Althoughwehavebuilt“TheGreenGreatWall”,westillneedtodosomethingtoprotecttheenvironment.,conj.虽然，尽管，即使,n.沙,somebody,someone,something,somewhereanybody,anyone,anything,anywherenone,nobody,nothing,nowhereeverybody,everyone,everything,everywhere,一般情况下用于肯定句,一般情况下用于否定句和疑问句,表否定含义,可用于各种句式,theindefinitepronounandadverb,1.Ihave_totellyou.A.importantsomethingB.somethingimportant,B,形容词修饰不定代词和不定副词时，要放在不定代词/不定副词之后,Doyouknow?,2.Everybody_readyforthematch.A.isB.are,A,不定代词作主语时，谓语动词要用单数。,1aListen,lookandsay.,1cRead1aandcompletetreesfunctions.,Treescanstopthewindfromblowingtheearthaway.Alotofwatercanbesavedbyforests.Theycanalsostopthewaterfromwashingtheearthaway.,Treesfunctions,K:wind;sand;anythingM:sandstormsJ:cutdown;asaresult;changeintoM:affectJ:stopfrom;blowawayK:canbesavedJ:washawayK:isharmfulto;although;dosomething,Actoutthedialoginpairs,2Completethesentenceswiththecorrectformsofthegivenphrasesinthebox.,asaresult,changeinto,dosomething,stopfrom,blowaway,1.Peoplehavecutdownsuchalargenumberoftreesthattheland_desert.2.Therearefewertreesleft,sothewindalways_theearth_.3.Airpollutionhasbecomeaseriousproblem,sowemust_toreduceit.4.weshouldtryourbestto_people_cuttingdownthetrees.5.Inthefuture,humanbeingscanprotectthetreeswell._,animalswillliveahappylifeintheforest.,haschangedinto,blows,away,dosomething,stop,from,Asaresult,3Doyouknowhowsandstormscomeintobeing?Numberthepicturesandtalkaboutthesandstormingroups.,(),(),(),(),(),(),4,1,5,3,6,2,washtheearthaway,manytrees,changeintodesert,forestsgone,sandstormscomeintobeing,cutdowntrees,4A.Listentothepassageandcirclethephrasesyouhear.,becomeweakerdestroytheenvironmentdisappearrapidlyontheearthenoughbambootoeat,4B.Listenagainandfillintheblanks.,1.Nowsomekindsofanimalsarebecoming_.2.Someanimalsare_dyingoutcompletely.3.Inthepast,pandaslivedaquietlifeandhad_food.4.Humanshave_theimportanceofprotectinganimals.5.Weshould_toprotectthem.,doourbest,indangerof,plentyof,cometounderstand,fewerandfewer,Lily,wouldyoulike_todrink?Cindyisverybusynow.Sheneeds_tohelpher.Isthere_wrongwithyourcomputer?Jimlookedforhispencil-box_,buthedidntfindit.Istayedathomelastweek.Ididntgo_.,Usesomeone,something,anything,somewhere,anywheretofillintheblanks.,something,someone,anything,somewhere,anywhere,Exercises,Welearn:1.Somewords:sand,although2.Somephrases:changeinto,humanbeing3.Somesentences:(1)Asaresult,alotofrichlandhaschangedintodesert.(2)Treescanstopthewindfromblowingtheearthaway.Wecan:1.Usetheindefinitepronounandadverb.2.Talkabou