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Unit2SavingtheEarthTopic2Alltheseproblemsareveryserious.SectionApollutionTeachingaims•Knowledgeaims:•1.Somewords:sand,desert•2.Somephrases:chang

einto,comeintobeing,cutdown3.Somesentences:(1)Asaresult,alotofrichlandhaschangedintodesert.(2)Treescanstopthewaterfromwashingtheearthaway

.Skillaims:•1.Usetheindefinitepronounandadverb.•2.Talkaboutthesandstormanditsharm.manytreescutdown砍到forestsgonewasht

heearthaway冲走changeintodesert转换成，变成沙漠e.g.Alotofrichlandhaschangedintodesertbecausepeoplehavecutdowntoomanytrees.san

dstormscomeintobeing形成n.沙尘暴3Doyouknowhowsandstormscomeintobeing?Numberthepicturesandtalkaboutthesandstormingroups.()()()()()()415362washtheearthaway

manytreeschangeintodesertforestsgonesandstormscomeintobeingcutdowntreesTheboyandgirlsaretalkingabout—————.A.differenttypesofsa

ndstormsB.thereasonsforsandstormsC.sandstormsindifferentcities1bListento1aandchoosethebestanswer.Focusonthemainideaoftheconversationwhenyoulistenfo

rthefirsttime.√Listenandanswerthequestions1.What’stheweatherliketoday?It’sbad.Thewindissostrong.Andthesandreall

yhurtsface.2.Whatcausesthesesandstorms?Peoplehavecutdowntoomanytrees.Asaresult,alotofrichlandhaschangedintodes

ert.3.Dowestillneedtodosomethingtoprotecttheenvironment?Yes,wedo.Althoughwehavebuilt“TheGreenGreatWall”

,westillneedtodosomethingtoprotecttheenvironment.conj.虽然，尽管，即使n.沙1cRead1aandcompletetrees’functions.A.Treescansto

pthewindfromblowingtheearthaway.B.Alotofwatercanbesavedbyforests.C.Theycanalsostopthewaterfromwashingtheearthaway.Tre

e’sfunctionsK:wind;sand;anythingM:sandstormsJ:cutdown;asaresult;changeintoM:affectJ:stop…from…;blow…

awayK:canbesavedJ:wash…awayK:isharmfulto;although;dosomethingActoutthedialoginpairs1.Ihave____totellyou.A.import

antsomethingB.somethingimportantB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.areA不定代词作主语时，谓语动词要用单数。somebod

y,someone,something,somewhereanybody,anyone,anything,anywherenone,nobody,nothing,nowhereeverybody,everyone,everything,everywhere一般情况下用于肯定句和委婉语气一般情况下用

于否定句和疑问句表否定含义可用于各种句式theindefinitepronounandadverb1.Ihave____totellyou.A.importantsomethingB.somethingimportantB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.areA不定代词作主语时，谓语动词要用单数。4A.Listentothepassageandcirclethephrasesyouhear.•becomeweaker•

destroytheenvironment•disappearrapidly•ontheearth•enoughbambootoeat4B.Listenagainandfillintheblanks.1.Nowsomekindsofanimalsarebecoming______________

_____.2.Someanimalsare_______________dyingoutcompletely.3.Inthepast,pandaslivedaquietlifeandhad______________food.4.Human

shave____________________theimportanceofprotectinganimals.5.Weshould________________toprotectthem.doourbesti

ndangerofplentyofcometounderstandfewerandfewer1.Lily,wouldyoulike___________todrink?2.Cindyisverybusynow.Sheneeds____

___tohelpher.3.Isthere_________wrongwithyourcomputer?4.Jimlookedforhispencil-box____________,buthedidn’tfindit.5.Istayedathomelastweek.Ididn’tgo____

______.Usesomeone,something,anything,somewhere,anywheretofillintheblanks.somethingsomeoneanythingeverywhereanywhereWelearn:1.Howdosandstormsco

meintobeing?2.Thetrees”functionsWecan:Usetheindefinitepronounandadverb..Summary•Memorizetheusefulexpressionsandkeysenten

ceswhichwelearntoday.•FinishSectionAinyourworkbook.•PreviewSectionB.Thankyou!