Unit 3 Lesson 17 Save the tigers 课件 2023-2024学年冀教版英语八年级下册

Unit 3 Lesson 17 Save the tigers 新课导入 brave strong fierce king of the forest What do you think of tigers? [breɪv] adj. 勇敢的，无畏的 ['sɪmb(ə)l] n. 标志，象征 ['kʌrɪdʒ] n. 勇气，胆量 They are symbols of strength and courage. 1.能熟悉并能正确运用本课时的重点单词和短语 2.能了解老虎的现状并保护老虎 学习目标 预习检测 1.A number of boys 　　　 playing computer games now. A.are B.is C.likes D.was 2.I don't like to play the piano　　　　. A.too B.either C.as well D.also 3._____the beginning of 20th century, China was a poor country. A.On B.With C.At D.In A B C 4.In recent years, many animals________quickly. A.has disappeared B.have disappeared C.disappear D.disappears 5.People_______a lot of trees every year. A.cut off B.cut up C.cut with D.cut down B D 知识梳理 1. At the beginning of the 20th century, the number of tigers in the wild was around 100 000. the number of意为“……的数量”，它的中心词是number， 引导短语作主语时，谓语动词要用单数形式： The number of the students is over 2000 in our school. a number of 表示“许多、大量的”，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 50. The number of pages in this book is 60. A number of students are planting trees on the hill. 2. But today that number has dropped to a few thousand. a few thousand表示“几千”当hundred, thousand前面是基数词one, two, three…a few, many时，其后不加s当hundred和thousand后面加s时，需要跟of修饰可数名词复数。例如： There are three thousand students in our school. Thousands of students are on the square. 3. For this reason, tigers are important to the environment. be important to sb./sth. ……对……来说是重要的。 be important for sb./sth. 对于……来说做……是重要的。 例如: Time is important to me. It is important for you to get there early. 4. reason/'riːzn /n . 原因；动机；理由 Eg：What is the reason for your long silences? 有关短语