《英语八年级下冀教版Unit 3 lesson 17 课件》由会员分享，可在线阅读，更多相关《英语八年级下冀教版Unit 3 lesson 17 课件（15页珍藏版）》请在金锄头文库上搜索。
1、 Lesson 17: Save the Tigers1) the number of2) balance的用法的用法3) danger的用法的用法I. Learning aims: Master the new words: century, fur, symbol, courage, brave, chain, balance, reason, disappear, kill, cut, decreaseII. Learning important and difficult points:New Wordscentury fursymbol couragebrave chainbalan
2、ce reason disappear killcut decreaseThink About ItlWhere can you usually see a tiger?lDo you think tigers need our help? Why or why not?Language Points1.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，野生老在二十世纪初期，野生老虎的数量大约是十万。虎的数量大约是十万。 the number of
3、是固定短语，意为“的数量”，后接可数名词复数，但中心词是number，所以谓语动词要用单数。如： The number of students in our school has grown from 1,000 to more than 1,500. a number of为量词短语，意为“许多；大量”，相当于a lot of或lots of，中心词是该短语所修饰的可数名词复数，所以作主语时，谓语动词用复数形式。 如： A number of students like playing computer games. 2. It helps keep the number of other
4、wild animals in balance. 它可以帮助保持其他野生它可以帮助保持其他野生动物的数量平衡。动物的数量平衡。 balance 在句中用作名词，意为“平衡；均衡”，常用短语be out of balance，意为“不平衡”；keep in balance意为“保持平衡”；balance还作动词，表示“（使）平衡；（使）均衡”。如： You must learn to keep your balance in skating. 在滑冰时你必须要学会保持平衡。 3. In recent years, tigers have been in danger of disappearin
5、g. 近年来，老虎近年来，老虎已经面临消失的危险。已经面临消失的危险。 danger意为意为“危险危险”，通常是不可，通常是不可数名词，表示做某事的危险或发生某数名词，表示做某事的危险或发生某情况的危险等，常用短语情况的危险等，常用短语 be in danger (of)，意为，意为“在危险中在危险中”。如：。如： Is there any danger of fire? 有发生有发生火灾的的危险吗？火灾的的危险吗？Exercises1. _ (长颈鹿) are the tallest animals on land.2. What beautiful _ (婚礼) clothes they
6、are!3. Uncle Yan visited many _ (亚洲的) countries last year. 4. He is interested in _ (历史).history I. 根据句意及所给汉语提示，完成下列句子。根据句意及所给汉语提示，完成下列句子。GiraffesweddingAsian1. One of the worlds biggest zoos _ (be) in Egypt.2. My pet dog _ (die) two weeks ago.3. _ (bar) keep the animals inside.4. They got _ (marry)
7、 on August, 8th 2008.5. The Siberian tiger is the _ (big)cat (猫科动物) in the world.biggest II. 用所给单词的适当形式填空。用所给单词的适当形式填空。isdiedBarsmarried1. Nobody else wants to go to the village. (改为同义句)_ _ _ want to go to the village.2. Liu Yang kept two dogs. (改为否定句)Liu Yang _ _ two dogs.3. Those zoos have ten pandas. (改为同义句)_ _ ten pandas in those zoos.There are III. 句型转换，每空一词。句型转换，每空一词。No other peopledidnt keepHomeworkWork in groups and discuss some ways we can protect animals. Write down your ideas.同学们来学校和回家的路上要注意安全同学们来学校和回家的路上要注意安全
