Unit 3 Lesson 17 Save the Tigers 学案（含答案）

Unit 3 Lesson 17 Save the Tigers 【学习目标】 1.了解danger的不同用法并能正确运用; 2.能够用所学英语知识详细介绍如何拯救即将灭绝的动物; 3.学会运用所学英语知识与他人谈论如何保护和拯救濒临灭绝的动物。 【预习导学】 一、填一填 1.She is a girl and full of enough _____ (勇气). 2.Tom is _____ (勇敢的)enough to save the little girl. 3.The _____ (链条)of my bike is broken. 4.We must try to keep the _____ (平衡)of nature. 5.Do you know the _____ (原因)why he didn't come to the party 二、连一连 三、用括号中所给单词的适当形式填空 1.Students always have a study plan at the _____ (begin)of the new term. 2.The tiger _____ (kill)a sheep in the video just now. 3.The number of the lions is _____ (decrease), so we must protect them. 4.The man _____ (cut)down two trees just now. 5.Noodles are the _____ (symbol)of long life. 【答案】预习导学 一、 1.courage　2.brave　3.chain　4.balance　5.reason 二、 三、 1.beginning　2.killed　3.decreasing　4.cut 5.symbols 【合作探究】 任务驱动1 阅读训练 两人一组,和搭档根据课文内容完成下面的思维导图。 任务驱动2 听力训练 1.听课文,完成下列句子。 (1)Today the number of tigers has dropped to _____ . (2)The tiger is at the _____ of the food chain. (3)People have _____ a lot of trees. 2.听课文,回答下列问题。 (1)How many tigers were there at the beginning of the 20th century _____ (2)What colour is the tigers' fur _____ What are the symbols of tigers 任务驱动3 制作手抄报 制作关于濒危动物的手抄报,要求图文并茂,可包括下列内容: What animals are in danger How many animals are in danger Why are these animals in danger When are the animals in danger 【答案】合作探究 任务驱动一 1.Save the tigers　2.Asia　3.strength and courage　4.in balance 任务驱动二 1.(1)a few thousand　(2)top　(3)cut down 2.(1)Around 100 000. (2)Orange. (3)Strength and courage. 【知识超市】 [命题点] At the beginning of the 20th century, the number of tigers in the wild was around 100 000.在20世纪初,野外老虎的数量大约是十万只。 ◎观察思考: 1.The number of the students in our school is about 3 500.我们学校的学生人数大约是3 500。 2.A number of students are playing on the playground.许多学生正在操场上玩。 ◎用法总结: 【辨析】the number of和a number of the number of 意为“……的数目/数量”,后接可数名词的复数形式,作主语时谓语动词用单数形式 a number of 意为“许多;大量”,后接可数名词的复数形式,谓语动词用复数形式 对点自测 用括号中所给单词的适当形式填空 1.The number of the ducks on the water _____ (be) 20. 2.A number of rabbits _____ (eat)grass by the lake every day. [命题点] In recent years, tigers have been in danger of disappearing.近年来,老虎面临着灭绝的危险。 ◎观察思考: 1.We should protect the animals in danger.我们应该保护濒危动物。 2.The panda is in danger of disappearing.大熊猫正处于灭绝的危险之中。 ◎用法总结: in danger of 意为“处于……的危险之中”,后加名词、代词或动名词形式。in danger 意为“处于危险状态”,可作表语或后置定语。out of danger 意为“脱离危险”。 对点自测 根据汉语提示完成句子 1.The old man is _____ (处于危险).Let's send him to the hospital. 2.Don't worry, Mr.Green.My ... ...