英语人教版九年级全册Unit 13Section A 3a ~ 3b.pptVIP

Unit 13 We are trying to save the earth.;Warm up: Think of some endangered animals. ;Answer these questions: What do you know about sharks? Do you think sharks are endangered? Why? What can we and our government do to help save the sharks?;Where shark fin soup is popular;Let’s learn some ;harmful 形容词，意为“有害的”。常构成短语 be harmful to “对……有害的”。 Staying up often is harmful to your health. 经常熬夜对你的健康有害。 【拓展】 harm 名词，意为“害处”。常用构成短语 do harm to “对……有害”，相当于be harmful to. Too much smoking does harm to his health. = Too much smoking is harmful to his health. 吸烟过多对他的健康有害。;at the top of 意为“在……的顶部或顶端”。 The answer is at the top of the page. There is a tower at the top of the hill. the food chain 食物链 the number of “……的数量”， 作主语时，谓语动词用单数形式 The number of the books 400. a number of “许多……” 作主语时，谓语动词用复数形式 A number of children playing in the park.; Read the passage about sharks and complete the fact sheet below.;Lets do this to review the text !!!;Homework