101一、掌握关于地球环境的词汇二、掌握情态动词can,should,must的用法三、复习发音选择正确的答案()1.Wecanusestones（石头）bridges（桥）.A.makeB.makingC.tomake()2.Wecangetwoodtrees.A.fromB.onC.of()3.Let’sthework.A.finishingB.finishC.tofinish()4.Treescankeeptheair.A.cleanB.cleansC.cleanly()5.Didyouyourbookyesterday?A.findB.lookforC.look比Pretest第17讲Unit12TheEarthWarmup学ReadingPartOnePartTwo①WeliveontheEarth.TheEarthisabeautifulplace.Therearerivers,oceans,landandforests.Therearemanydifferentplantsandanimalstoo.②People,plantsandanimalsneedcleanwaterandair.Sometimespeoplethrowrubbishintoriversandoceans.Sometimespeoplecutdowntoomanytrees.Smokefromcarsandfactoriesmaketheairdirty.TheEarthgetssick.生活中常见的环保标志MsGuo:Lookatthispicture.Whatisit?Kitty:It’stheEarth.MsGuo:Thegreenandbrownpartsareforestsandland.Whataretheblueparts?Joe:Ithinkthey’reoceans.MsGuo:Yes,theyare.TheEarthwasverycleanandbeautifulinthepast,butnowsomepartsaredirty.CanwedoanythingtohelptheEarth?Alice:Yes.Weshouldstopthrowingrubbishintorivers.Peter:Weshouldstopcuttingdownsomanytrees.Kitty:Weshouldstopusingplasticbags.102③NowpeopleworktogethertokeeptheEarthcleanandhealthy.Theypickuprubbish.Theyplanttreeseveryyear.④Theyrecycleglassandpaper.Theybringtheirownshoppingbagsandstopusingplasticbags.Vocabulary词汇词性音标词义常见搭配Earth名词n.[ɜːθ]地球part名词n.[pɑːt]地区；区域复数：partsforest名词n.['fɒrɪst]森林intheforestland名词n.[lænd]陆地ocean名词n.['əʊʃ(ə)n]海洋PacificOceanrubbish名词n.['rʌbɪʃ]垃圾throwrubbishsick形容词adj.[sɪk]生病的getsickrecycle动词v.[riː'saɪk(ə)l]回收利用；再利用glass名词n.[glɑːs]玻璃；玻璃杯aglassofwaterown形容词adj.[əʊn]自己的myownroomsomany这么多区别：toomuchpickup捡起；拾起shoppingbag购物袋复数：shoppingbagsplasticbag塑料袋复数：plasticbagsKeywordsandphrases1.Therearekindsoffishintheo.2.Mingminggetss.1033.Wemaygetlostinthe.6.Elephantsliveonthe,notinthesea.5.Peoplemakelotsofeveryday.4.Weshoulddoourbesttoprotestthe.7.Weshouldrthewastepaper.Grammar知识...
