
八年级英语下册 Unit 3 Animals Are Our Friends Lesson 17 Save the Tigers课件 (新版)冀教版.ppt
26页Unit 3 Animals Are Our Friends Lesson 17 Ⅰ. 根据汉语提示写出下列单词或短语根据汉语提示写出下列单词或短语1. 世纪 世纪 n. _______2. (兽类的兽类的)毛毛n. ___3. 标志标志; 象征象征n. _______4. 勇气勇气; 胆量胆量n. _______centuryfursymbolcourage5. 勇敢的勇敢的; 无畏的无畏的adj. _____6. 链子链子; 链条链条n. _____7. 原因原因; 动机动机; 理由理由n. ______8. 消失消失; 失踪失踪v. _________9. 杀死杀死v. ___10. 砍砍; 剪剪; 切切; 割割v. ___bravechainreasondisappearkillcut11. 使使…………变小变小; 减少减少v. ________12. 下降到下降到_______ 13. 还还; 也也______ decreasedrop toas wellⅡ. 根据汉语提示完成下列句子根据汉语提示完成下列句子1. 在二十世纪初期在二十世纪初期, 野生老虎的数量大约是十万。
野生老虎的数量大约是十万 ___ _________ __the 20th century, ___ _______ __tigers in the wild was around 100 000. 2. 老虎在食物链的顶端老虎在食物链的顶端The tiger is __ ___ ___ __the ____ _____. At the beginning ofthe number ofat the top offood chain3. 它可以帮助保持其他野生动物的数量平衡它可以帮助保持其他野生动物的数量平衡It _____ _____the number of other wild animals _________. 4. 人们也砍伐了许多树人们也砍伐了许多树People have ___ _____a lot of trees as well. helps keepinbalancecut down5. 最近几年最近几年, 老虎已经面临着消失的危险了老虎已经面临着消失的危险了In recent years, tigers _____ _____ __ _______ __disappearing. have been in danger ofⅢ. Read the dialogue and answer the questions1. How many tigers are there in the wild today? ______________________________________ 2. What is the reason tigers are important to the environment? ____________________________________________________________________________________ The number has dropped to a few thousand.The tiger is at the top of the food chain. It helps keepthe number of other wild animals in balance.3. Why do people hunt and kill tigers? ______________________________________ 4. Aside from their being hunted and killed, what is another reason tigers are disappearing? ___________________________________________________________________________ Some people hunt and kill tigers for money.disappear, tigers lose their homes.People have cut down a lot of trees as well. As forests要点要点1 at the beginning of 在在…………开始 开始 Step 1难点难点·探探(1)at the beginning of后常接什么词后常接什么词? (2)beginning可构成哪些短语可构成哪些短语? Step 2语境语境·悟悟*At the beginning of the 20th century, the number of tigers in the wild was around 100 000. 在在20世纪初世纪初, 野生老虎的数量是十万。
野生老虎的数量是十万P42)*At the beginning of the class, Miss Wang told a story. 开始上课时开始上课时, 王老师讲了一个故事王老师讲了一个故事Step 3知识知识·得得at the beginning of意思是意思是“在在…………之初之初, 最初最初”, 强调强调开始的时间开始的时间, 其后常接表示时间、事件或其他意义的其后常接表示时间、事件或其他意义的名词同义短语是名词同义短语是at the start of 其反义短语是其反义短语是 at the end of. . . 意为意为“在在…………的结尾的结尾/末端末端”【【拓展拓展】】beginning的其他短语的其他短语Step 4考点考点·练练①①今年年初我们学校建立了一个新的实验室今年年初我们学校建立了一个新的实验室A new club was built in our school __ ___ ___________this year. ②②吉姆从一开始就在公共汽车上吉姆从一开始就在公共汽车上Jim was on the bus _____ ___ _________. at the beginningoffrom the beginning要点要点2 the number of. . . …………的数量 的数量 Step 1难点难点·探探(1)the number of做主语谓语动词用什么形式做主语谓语动词用什么形式? (2)the number of和和 a number of 有什么区别有什么区别? Step 2语境语境·悟悟*At the beginning of the 20th century, the number of tigers in the wild was around 100 000. 在二十世纪初期在二十世纪初期, 野生老虎的数量大约是十万。
野生老虎的数量大约是十万P42)*A number of students are playing on the playground. 许多学生正在操场上玩许多学生正在操场上玩Step 3知识知识·得得the number of意意为“…………的数量的数量”, 后接可数名后接可数名词复数复数, 但中心但中心词是是number, 作主作主语时, 谓语动词要用要用_____形式形式a number of量量词短短语, 意意为“许多多; 大量大量”, 后后接接_____名名词在句中作主在句中作主语时, 谓语动词用用_____形式number 前面前面还可以用可以用large, small来修来修饰单数单数复数复数复数复数Step 4考点考点·练练( )①①A number of visitors _____visiting the West Lake and the number of the visitors _____increasing. 世纪金榜导学号世纪金榜导学号 A. are, is B. is, areC. are, are D. is, isA②②共享单车的使用人数今年有望达到五千万。
共享单车的使用人数今年有望达到五千万 _______ __shared bike users is expected to reach 50 million this year. The number of要点要点3 cut down 砍伐 砍伐 Step 1难点难点·探探(1)cut down宾语为代词时放在什么位置宾语为代词时放在什么位置? (2)cut相关短语有哪些相关短语有哪些? Step 2语境语境·悟悟*People have cut down a lot of trees as well. 人们还砍伐了许多树木人们还砍伐了许多树木P42)*The zoo keeper cut down some bamboo to feed the pandas. 动物园饲养员砍了些竹子去喂熊猫动物园饲养员砍了些竹子去喂熊猫She wants to cut the pocket money down to 50 yuan. 她想把零花钱降到她想把零花钱降到50元Step 3知识知识·得得(1)cut down意为意为“砍倒砍倒”, 为动副短语当宾语为代词时为动副短语当宾语为代词时必须放在必须放在cut和和down_____, 当宾语为名词时当宾语为名词时, 放在放在down前后均可。
前后均可2)cut down 还可以表示还可以表示“(尺寸上或者数量上尺寸上或者数量上)削减削减, 缩缩小小”, 也可以与也可以与to或者或者on连用之间之间【【拓展拓展】】与与cut 有关的常用短语有有关的常用短语有: Step 4考点考点·练练①①人类砍伐树木人类砍伐树木, 因此动物处于极大的危险之中因此动物处于极大的危险之中People ___ _____many trees, so animals are in great danger. cut down( )②②(2018·安顺中考安顺中考)I think young phubbers(低低头族头族)are supposed to _____the time they spend _____their smart phones. A. cut off; inB. cut down; onC. cut up; onD. cut in; inB( )③③(2018·连云港中考连云港中考)—I’m sorry to _____on you, but there are one or two things I don’t understand. —It doesn’t matter. A. cut down B. cut out C. cut in D. cut offC。
