【备课精品】九年级英语（新）鲁教版下册 精品课件Unit8__SectionA（Grammar__focus-4c）.pptVIP

Unit 8 Were trying to save the earth! 不同种类的污染 2. 河底 3. 把垃圾扔到河里 4. 在……中起作用 different kinds of pollution the bottle of the river throw rubbish into the river play a part in I. Check if you know these phrases. 5. 在中国南部 6. 对……有害 7. 在……顶部 8. 海洋生态系统 in southern China be harmful to at the top of the ocean’s ecosystem II. Translate the sentences. 1. 甚至是河底都满是垃圾。 2. 这个方法不仅残酷还对环境有害。 Even the bottom of the river was full of rubbish. This method is not only cruel, but also harmful to the environment. 3. 鲨鱼处于海洋食物链的顶部。 4. 许多人相信鱼翅对健康有好处。 Sharks are at the top of the food chain in the ocean’s ecosystem. A lot of people believe that shark’s fins are good for health. Pay attention to the sentences. 1. We’re trying to save the earth. 2. The river used to be so clean. 3. The air is badly polluted. 4. No scientific studies have shown that shark fins are good for health. 5. We should help save the sharks. Present progressive used to Passive voice Present perfect Modal verbs 现在进行时: Present Progressive 结构: be (am/is/are) + v.-ing 标志词：Look, Listen, now, right now… e.g. Look! The boy is crying. 定义：表示说话时(瞬间)正在进行的动作, 也表示目前或现阶段正在进行的动作。 What a fine day today! Look! What are they doing? used to do sth. 表示过去常常做某事, 而现 在往往不做了, 后接动词原 形。 be used to doing sth. 表示习惯于做某事 e.g. I used to get up at six o’clock. Joe is used to drinking a cup of coffee every morning. used to do与be used to doing Translation. 1. 她过去常常周末和朋友闲逛。 She used to hang out with friends on weekends. 2. 他习惯于每天晚上睡得很晚。 He is used to staying up. 被动语态：Passive voice 定义：表示主语是动作的承受者，即行 为动作的对象的一种语态。 结构：be + 过去分词 e.g. A new school was built last year. Our classroom is cleaned every day. Translate the sentences by using Passive voice. 1. 刚才一些老年人参观了博物馆。 2. 工人们使用不同种类的机器工作。 The museum was visited by some old people just now. Different kinds of machines are used to work by the workers. 结构: has/have + 过去分词 标志词：already, yet, ever, never, since,