Lesson17SavetheTigers拯救老虎.pptx

单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,#,单击此处编辑母版文本样式,第二级,#,单击此处编辑母版标题样式,Lesson 17,Save the Tigers,西坡中学：李 江,century,fur,symbol,courage,brave,chain,n.,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,Words and expressions,balance,reason,disappear,kill,cut,decrease,n.,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,Words and expressions,To use the following words,century,courage,brave,reason,kill,cut。,了解一些介绍保护动物的句式。,教学目标,1、分析文章，理解中心思想,2、掌握一些与保护动物有关的词汇并了解保护动物的方法。,3、掌握以下介绍保护动物的句式：,（1）These volunteers hope to save the tigers of the world.,(2)At the beginning of the 20th century,the number of tiger in the wild was around 100 000,(3)The tiger is at the top of the food chain,(4)As forests disappear,tigers lose their homes.,4、,the number of与a number of的区别与用法,重点难点,1.在之初 2.的数量,3.下降到;跌至 4.食物链,5.in balance 6.in danger,7.as well 8.cut down,听并 找一找,Read the lesson and answer the questions.,1.How many tigers were there at the beginning of the 20th century?,Around 100 000.,2.How many tigers are there in the wild today?,The number has dropped to a few thousand.,3.Where do tigers live?,They live in the forests of Asia.,4.What do tigers look like?,They usually have orange fur and dark stripes.,5.What do tigers symbolize?,They are symbols of strength and courage.,6.How are tigers described in many stories?,They are brave.,7.What does“at the top of the food chain”mean?,Tigers are the king of all the wild animals.,8.What is the reason tigers are important to the environment?,Because tigers help keep the number of other wild animals in balance.,9.Why do people hunt and kill tigers?,They are for money.,10.Aside from their being hunted and killed,what is another reason tigers are disappearing?,People have cut down a lot of trees as well.As forests disappear,tigers lose the homes.,Language Points,1.,At the beginning of the 20th century,the number of,tigers in the wild was around 100 000.,在二十世纪初期，野生老虎的数量大约是十万只。,the number of,意为“,的数量”，跟复数名词连用作主语时，谓语动词要用单数。,a number of表示“许多”，相当于many，修饰可数名词复数。作主语时，谓语动词用复数。number前可用large，small等修饰，表示程度。例如：,The number of,students in our class is fifty.,The number of,pages in this book is forty.,A number of,students are playing on the playground.,主谓一致专项练习题,1 The number of the students in our school _1200.,A.is B.are C.has D.have,2 The number of the students in our school _1200.,A.is B.are C.has D.have,3 Two days _enough for me to finish the work.I need a third day.,A.isn,t B.is C.aren,t D.are,4,._ the teachers in their school is about 200 and one fourth of them are _teachers.,A number of;women B.A number of;woman,C.The number of;women D.The number of;woman,5,.-What _ the number of the students in your school?,-About two thousand.A number of them _ from England.,A.is;are B.is;is C.are;is D.are;are,2.,In recent years,tigers have been,in danger of,disappearing.,在近几年，老虎处于濒临灭绝的危险中。,in danger(of)意为“处于（）危险之中”。例如,Youre,in danger of,catching a cold.,The sick man is,in danger of,death.,The passengers are,in danger,!Lets go and help!,3.,As,forests disappear,tigers lose their homes.,随着森林的消失，老虎失去了它们的家园。,as在句中作连词，引导状语从句，意为“随着，当的时候”。,As,the sun rose,the fog disappeared.,As,she left the room,she remembered that book.,Fill in the blanks.,1._ students is about twenty.(,的数量,),2.Its _ your health.(,对,是重要的,),3.The river is polluted and _ going dry.(,处于,危险中,),The number of,important to,in danger of,4._ time went by,she became more and more beautiful.(随着),5._ the party,he gave me a gift.(在之初),6.The temperature has,_,below zero.(下降到),7.It is at the bottom of the _.(食物链),8.You know,computers bring troubles _.(也),As,At the beginning of,dropped to,foodchain,as well,在,之初,下降到；跌至,食物链,保持平衡,处于危险状态,把,砍到，减少,（除某事或某人外）还，也,at the beginning of,drop to,food chain,in balance,in danger,cut down,as well,Reflection,Homework,Create a poster about ways we can protect animals.,