Unit 3 Animals are our friends Lesson 17 示范公開課教學(xué)課件 (八下翼教版)

Unit3Lesson17SavethetigersThinkaboutit!?Wherecanyouusuallyseeatiger??Doyouthinktigersneedourhelp?Whyorwhynot?Warm-upDoyouknowthesetigers?PresentationtheBengaltigertheSiberiantigertheSumatrantigertheMalayantigerPresentationtheIndochinesetigertheSouthChinatigercenturyfursymbolcouragebravechainWordsandexpressionsPresentationn.世紀(jì)n.（獸類的）毛n.標(biāo)志，象征n.勇氣，膽量adj.勇敢的，無畏的n.鏈子；鏈條balancereasondisappearkillcutdecreasePresentationn.平衡，平穩(wěn)n.原因，動機(jī)，理由v.消失，失蹤v.殺死v.砍，切，剪，割v.使……變小；減少Readthelessonandanswerthequestions.1.Howmanytigerswerethereatthebeginningofthe20thcentury?

Around100000.2.Howmanytigersarethereinthewildtoday?

Thenumberhasdroppedtoafewthousand.3.Wheredotigerslive?

TheyliveintheforestsofAsia.Presentation4.Whatdotigerslooklike?

Theyusuallyhaveorangefuranddarkstripes.5.Whatdotigerssymbolize?Theyaresymbolsofstrengthandcourage.6.Whatisthereasontigersareimportanttotheenvironment?Becausetigershelpkeepthenumberofotherwildanimalsinbalance.7.Whydopeoplehuntandkilltigers?

Theyareformoney.PresentationReadtheLesson

andfindthemainideaofeachparagraph.SavetheTigers“SavetheTigers”

isavolunteergroupthathopestostopthetigersfromdisappearing.Tigersareimportanttotheenvironment.Tigersareindangerofgoingextinct.PresentationLanguagepoints1.Ithelpskeepthenumberofotherwildanimalsinbalance.

(1)thenumberof表示“……的數(shù)量”，后接可數(shù)名詞的復(fù)數(shù)形式，作

主語時，謂語動詞用單數(shù)。Thenumberofthestudentsinourschool___(be)about3500.anumberof為許多、大量，作主語時，謂語動詞用復(fù)數(shù)。Anumberofstudents___(be)playingintheplayground.isareLanguagepoints(2)balance在句中用作名詞，意為“平衡；均衡”。

常用短語：beoutofbalance

意為“不平衡”；keepinbalance意為“保

持平衡”。

balance還作動詞，表示“（使）平衡；（使）均衡”。

Youmustlearntokeepyourbalanceinskating.

在滑冰時你必須要學(xué)會保持平衡。Languagepoints2.Forthisreason,tigersareimportanttotheenvironment.beimportanttosb./sth.意為“……對于……來說是重要的”。beimportantforsb.todosth.意為“

做某事對某人來說是重要的”。

Timeisimportanttome.時間對我來說很重要。

ItisimportantforyoutolearnEnglishwell.

對你來說學(xué)好英語很重要。Ⅰ.根據(jù)句意及漢語提示寫出相應(yīng)的單詞和短語。1.Buttodaythatnumberhas____________(下降到)afewthousand.2.Thetigeris______________(在……的頂部)the__________(食物鏈).3.Ithelpskeepthenumberofotherwildanimals_____________(保持平衡).4.Somepeoplehuntand_______(殺死)tigersformoney.5.Peoplehave_____________(砍伐)alotoftrees___________(也).droppedtoatthetopofchainfoodinbalancekillcutdownaswellExerciseⅡ.將下列句子補(bǔ)充完整。1.“拯救老虎”是一個志愿者的組織?！癝avethetigers”is______________volunteers.2.在20世紀(jì)初期，野生老虎的數(shù)量大約是十萬。____________________the20thcentury,_____________tigersinthe

wild____around100,000.3.老虎是力量和勇氣的象征。Tigersare___________strengthandcourage.agroupofAtthebeginningofthe