《Unit 3 Lesson 17》（冀教版）

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1、Unit3AnimalsareourfriendsLesson17SavethetigersThinkaboutit!•Wherecanyouusuallyseeatiger?•Doyouthinktigersneedourhelp?Whyorwhynot?Therearecurrentlysixtypesoftigers:theBengaltiger,theSiberiantiger,theSumatrantiger,theMalayantiger,theIndochinesetigertheSouthChinatiger.theBengaltigertheSi

2、beriantigertheSumatrantigertheMalayantigertheIndochinesetigertheSouthChinatigercenturyfursymbolcouragebravechainn.世纪n.（兽类的）毛n.标志，象征n.勇气，胆量adj.勇敢的，无畏的n.链子；链条Wordsandexpressionsbalancereasondisappearkillcutdecreasen.平衡，平稳n.原因，动机，理由v.消失，失踪v.杀死v.砍，切，剪，割v.使……变小；减少WordsandexpressionsTouseth

3、efollowingwordsandexpressionscorrectly:century,courage,brave,reason,kill,cut,atthebeginningof…,dropto,foodchain,inbalance,indanger,cutdown,aswellobjectivesReadthelessonandanswerthequestions.1.Howmanytigerswerethereatthebeginningofthe20thcentury?Around100000.2.Howmanytigersarethereinth

4、ewildtoday?Thenumberhasdroppedtoafewthousand.3.Wheredotigerslive?TheyliveintheforestsofAsia.4.Whatdotigerslooklike?Theyusuallyhaveorangefuranddarkstripes.5.Whatdotigerssymbolize?Theyaresymbolsofstrengthandcourage.6.Howaretigersdescribedinmanystories?Theyarebrave.7.Whatdoes“atthetopoft

5、hefoodchain”mean?Tigersarethekingofallthewildanimals.8.Whatisthereasontigersareimportanttotheenvironment?Becausetigershelpkeepthenumberofotherwildanimalsinbalance.9.Whydopeoplehuntandkilltigers?Theyareformoney.10.Asidefromtheirbeinghuntedandkilled,whatisanotherreasontigersaredisappear

6、ing?Peoplehavecutdownalotoftreesaswell.Asforestsdisappear,tigerslosethehomes.