Unit2Topic1SectionA陈

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1、Unit2SavingtheEarthTopic2Alltheseproblemsareveryserious.SectionApollutionmanytreescutdownforestsgonewashtheearthaway冲走changeintodesert转换成，变成沙漠e.g.Alotofrichlandhaschangedintodesertbecausepeoplehavecutdowntoomanytrees.sandstormscomeintobeingn.沙尘暴Theboyandgirlsaretalkingabout——

2、———.differenttypesofsandstormsthereasonsforsandstormssandstormsindifferentcities1b.Listento1aandchoosethebestanswer.Focusonthemainideaoftheconversationwhenyoulistenforthefirsttime.√Listenandanswerthequestions1.What’stheweatherliketoday?It’sbad.Thewindissostrong.Andthesandreal

3、lyhurtsface.2.Whatcausesthesesandstorms?Peoplehavecutdowntoomanytrees.Asaresult,alotofrichlandhaschangedintodesert.3.Dowestillneedtodosomethingtoprotecttheenvironment?Yes,wedo.Althoughwehavebuilt“TheGreenGreatWall”,westillneedtodosomethingtoprotecttheenvironment.conj.虽然，尽管，即使

4、n.沙1aListen,lookandsay.1.asaresult（作为）...的结果asaresultof...由于...的原因2.although,though"尽管"，不能与but连用1c.Read1aandcompletetrees’functions.Treescanstopthewindfromblowingtheearthaway.Alotofwatercanbesavedbyforests.Theycanalsostopthewaterfromwashingtheearthaway.Tree’sfunctionsK:wind;s

5、and;anythingM:sandstormsJ:cutdown;asaresult;changeintoM:affectJ:stop…from…;blow…awayK:canbesavedJ:wash…awayK:isharmfulto;although;dosomethingActoutthedialoginpairs2Completethesentenceswiththecorrectformsofthegivenphrasesinthebox.asaresult,changeinto,dosomething,stop…from,blow

6、…away1.Peoplehavecutdownsuchalargenumberoftreesthattheland_____________________desert.2.Therearefewertreesleft,sothewindalways_______theearth________.3.Airpollutionhasbecomeaseriousproblem,sowemust______________toreduceit.4.weshouldtryourbestto_________people________cuttingdo

7、wnthetrees.5.Inthefuture,humanbeingscanprotectthetreeswell._____________,animalswillliveahappylifeintheforest.haschangedintoblowsawaydosomethingstopfromAsaresult3Doyouknowhowsandstormscomeintobeing?Numberthepicturesandtalkaboutthesandstormingroups.()()()()()()415362washtheear

8、thawaymanytreeschangeintodesertforestsgonesandstormscomeintobeingcut