Lesson17SavetheTigers

教师 郭妮 Thinkaboutit 1 Wherecanyouusuallyseeatiger 2 Doyouthinktigersneedourhelp Whyorwhynot 3 Whatcanwedotoprotectwildanimals inacage orinthewild h tiger TigersliveintheforestofAsia Theyusuallyhaveorangefur 毛 anddarkstripes Inmanystories theyarebrave 勇敢的 Tigersaresymbols 象征 ofcourage 勇气 Inrecentyears somepeoplehuntandkill 杀死 tigersformoney Peoplealsocut 砍 downalotoftrees sotigerslosetheirhomes Lesson17 SavetheTigers Newwords centuryn 世纪 thetwentiethcentury furn 毛 symboln 象征 couragen 勇气 braveadj 勇敢的 chainn 链条 balancen 平衡 reasonn 原因 killv 杀死 cutv 砍 切 剪 cutdowntrees decreasev 使 减少 变小 disappearv 消失 Canyourememberthesenewwords Let stry Practicewiththenewwords centuryfursymbolbravecouragechainbalancereasondisappearcutdecrease Wepaperwithscissors I dliketoknowthewhyyouloveyourpetdogsomuch Theplaneflewhigherandhighertillitinthesky Thetigeristhesymbolof Themanjumpedintothecoldriverandsavetheboy Thenumberofthetigersinthewild quicklytheseyears AlanTuringmadethefirstcomputerinthelast The onthebearisdarkbrown Thelittlegirlwearsa ofrosesonherhair cut reason disappeared brave decreases century courage fur chain Readandmatcheachparagraphwithitsmainidea Savethetigers Paragraph1 Paragraph2 Paragraph3 Tigersareindangerofdisappearing SavetheTigers isavolunteergroupthathopestostopthetigersfromdisappearing Tigersareimportanttotheenvironment B A c paragraph1 paragraph2 Paragraph3 Atthebeginningofthe20thcentury thenumberofthetigerswasaround100000 Thenumberhasdroppedtoafewthousand Tigersareatthetopofthefoodchain Itcanhelpkeepthenumberofotherwildanimalsinbalance Somepeoplehuntandkilltigersformoney Peoplehascutdownalotoftrees tigerslosetheirhomes Readandfindsomesentencestosupportthemainidea Languagepoints 1 在20世纪初 全世界野生老虎的数量约是10万只 Atthebeginningofthe20thcentury thenumberoftigersinthewildwasaround100000 thenumberof是固定短语 意为 的数目 数量 后接可数名词的复数 作主语时 谓语动词用单数 e g 苹果的数量是40 Thenumberoftheapplesis40 Thenumberofthebearsbecomessmallerandsmaller Anumberofstudentsareplayingontheplayground e g 许多学生正在操场上玩 anumberof许多 大量 修饰可数名词复数 作主语时谓语动词用复数 2 atthebeginningof在 开始 之初 attheendof在 末尾 尽头 e g 在这学期初 我们在学校的花园种了很多树 Atthebeginningofthisterm weplantedalotoftrees 3 但现在已经降到了几千 Buttodaythatnumberhasdroppedtoafewthousand 下降到 跌至 Ithelpskeepthenumberofotheranimalsinbalance keep inbalance是固定词组 意为 保持平衡 4 它有助于使其他野生动物的数量保持平衡 Thetemperaturewilldropto10degreestomorrow e g 明天温度将降到10度 e g 我们必须保持生态平衡 Wemustkeepnatureinbalance 5 老虎已有消失的危险 Tigershavebeenindangerofdisappearing indangerof固定短语 意为 处于危险状态 eg 这位病人有死亡的危险 Thesickmanisindangerofdeath 6 此外 人们还砍伐了许多树木 Peoplehavecutdownalotoftreesaswell cutdown把 砍到 减少 代词放中间 名词放down的前后都可以 e g 我们正忙着砍树 Wearebusycuttingtreesdown Wearebusycuttingdowntrees Wearebusycuttingthemdown 7 Aswell常用作状语 意为 还 也 常位于句首或句末 句末无需用逗号隔开 相当于too IamgoingtoLondonandmysisterisgoingaswell 翻译下列的短语 1 在 之初2 下降到 跌至3 食物链4 保持平衡5 处于危险状态6 把 砍到 减少7 还 也 atthebeginningof droptofoodchainkeep inbalanceindangercutdownaswell Fillintheblanks 1 studentsisabouttwenty 的数量 2 It s yourhealth 对 是重要的 3 Theriverispollutedand goingdry 处于 危险中 Thenumberof importantto indangerof 4 timewentby shebecamemoreandmorebeautiful 随着 5 theparty hegavemeagift 在 之初 6 Thetemperaturehas belowzero 下降到 7 Itisatthebottomofthe 食物链 8 Youknow computersbringtroubles 也 As Atthebeginningof droppedto foodchain aswell Animalsareourbe