2018年秋人教版英語九年級上冊課件：Unit 13 Section A grammar focus

1、 不同種類的污染不同種類的污染 2. 河底河底 3. 把垃圾扔到河里把垃圾扔到河里 4. 在在中起作用中起作用 different kinds of pollution the bottom of the river throw rubbish into the river play a part in I. Check if you know these phrases. 5. 在中國南部在中國南部 6. 對對有害有害 7. 在在頂部頂部 8. 海洋生態(tài)系統(tǒng)海洋生態(tài)系統(tǒng) in southern China be harmful to at the top of the oceans ecos

2、ystem II. Translation. 1. 這個方法不僅殘酷還對環(huán)境有害。這個方法不僅殘酷還對環(huán)境有害。 This method is not only cruel, but also harmful to the environment. 2. 鯊魚處于海洋食物鏈的頂部。鯊魚處于海洋食物鏈的頂部。 3. 許多人相信魚翅對健康有好處。許多人相信魚翅對健康有好處。 Sharks are at the top of the food chain in the oceans ecosystem. A lot of people believe that sharks fins are goo

3、d for health. Pay attention to the sentences. 1. Were 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 Presen

4、t perfect Modal verbs 現(xiàn)在進行時現(xiàn)在進行時: : Present progressive 結構結構: be (am/is/are) + v.-ing 標志詞：標志詞：Look, Listen, now, right now, these days, this month e.g. Look! The boy is crying. Mr. Green is writing a book these days. 定義：定義：表示說話時表示說話時(瞬間瞬間)正在進行的動正在進行的動 作作, 也表示目前或現(xiàn)階段正在進也表示目前或現(xiàn)階段正在進 行的動作。行的動作。 What a f

5、ine day today! Look! What are they doing? used to do sth. 表示過去常常做某事表示過去常常做某事, 而現(xiàn)在而現(xiàn)在 往往不做了往往不做了, 后后 接動詞原形。接動詞原形。 be used to doing sth. 表示表示習慣于做某事習慣于做某事 e.g. I used to get up at six oclock. Joe is used to drinking a cup of coffee every morning. used to do與與be used to doing 1. 她過去常常周末和朋友閑逛。她過去常常周末和朋友閑

6、逛。 She used to hang out with friends on weekends. 2. 他習慣晚睡。他習慣晚睡。 He is used to staying up. 被動語態(tài)：被動語態(tài)：Passive voice 定義：定義：表示主語是動作的承受者，即行為表示主語是動作的承受者，即行為 動作的對象的動作的對象的 一種語態(tài)。一種語態(tài)。 結構：結構：be + 過去分詞過去分詞 e.g. A new school was built last year. Our classroom is cleaned every day. Translate the sentences by u

7、sing Passive voice. 1. 剛才一些老年人參觀了博物館。剛才一些老年人參觀了博物館。 2. 工人們使用不同種類的機器工作。工人們使用不同種類的機器工作。 The museum was visited by some old people just now. Different kinds of machines are used to work by the workers. 結構結構: has/have + 過去分詞過去分詞 標志詞：標志詞：already, yet, ever, never, since, for e.g. I havent finished my hom

8、ework yet. 定義：定義：表示動作已經完成表示動作已經完成, 但對現(xiàn)在造成但對現(xiàn)在造成 影響影響; 或者表示從過去某一時間或者表示從過去某一時間 開始一直延續(xù)到現(xiàn)在并還可能持開始一直延續(xù)到現(xiàn)在并還可能持 續(xù)下去的動作。續(xù)下去的動作。 現(xiàn)在完成時現(xiàn)在完成時: Present perfect Complete the following sentences. I _ (be) in Beijing for two years. 2. I _ never _ (hear) of that man before. 3. Tom _ (work) there since two years ag

9、o. have been haveheard has worked 4. The twins _ (wash) the clothes for an hour. 5. He _ (play) basketball since three years ago. 6. How long _ Sally _ (sing) yet? have washed has played has sung 1. 情態(tài)動詞本身有一定的詞義情態(tài)動詞本身有一定的詞義, 表示說話人的情緒、表示說話人的情緒、 態(tài)度或語氣態(tài)度或語氣, 但不能單獨作謂語但不能單獨作謂語, 只能與其他動詞只能與其他動詞 構成謂語。構成謂語。

10、常見的有常見的有: can (could), may (might), must, need, shall (should), will (would)等。等。 情態(tài)動詞情態(tài)動詞 2. 情態(tài)動詞無人稱和數(shù)的變化情態(tài)動詞無人稱和數(shù)的變化, 后接動詞原形。否后接動詞原形。否 定式是在情態(tài)動詞后面加定式是在情態(tài)動詞后面加not。個別情態(tài)動詞有。個別情態(tài)動詞有 過去式形式過去式形式, 可用來表達更加客氣、委婉的語氣。可用來表達更加客氣、委婉的語氣。 e.g. Ken can climb up the tress like a koala. Tracy could ride a bicycle when

11、 she was five years old. You mustnt play with fire. It is dangerous. 1. 我們不能在教室里吃東西。我們不能在教室里吃東西。 2. 首先你必須完成作業(yè)。首先你必須完成作業(yè)。 3. 他現(xiàn)在不可能在家。他現(xiàn)在不可能在家。 4. 她一定知道這個問題的答案。她一定知道這個問題的答案。 We cant eat in the classroom. You must finish your homework first. He cant be at home now. She must know the answer to this que

12、stion. 4a Fill in the blanks with the correct forms of the verbs in brackets. Joe: _ you ever _ (take) part in an environmental project? Eric: Yes, I have. I _ (help) with a Clean-Up Day last year. It was _ (consider) the biggest clean-up project this city _ ever _ (have). Have taken helped consider

13、ed hadhad Joe: How many people _ (take) part? Eric: I _ (think) more than 1,000 people _ (come) to help out. Joe: Thats fantastic! I guess everyone in this city is _ (try) to improve the environment. Eric: Yes, we cant afford to _ (wait) any longer to take action! took thinkcame trying wait 4b Fill

14、in the blanks with the appropriate modal verbs from the box. People _ think that big things _ be done to save the earth. Many forget that saving the earth begins with small things. may/mightmust/ have to can would could have to should must may/ might For example, you _ save electricity by turning of

15、f the lights when you leave a room. You _ also use reusable bags instead of plastic bags. can/ could/ should could/ can/ should I think its a great idea that you now _ pay for plastic bags in some stores. And instead of driving to school or work, you _ ride your bike or walk. If its far, you _ take

16、the bus. have to can/should/ could can/could All these small things _ add up and become big things that _ improve the environment. Lets take action now! can/ could would/can/ could 4c Make a list of things that people can do to help the environment and discuss your list with your partner. use public

17、 use public transportation (n.transportation (n.交通交通 運輸運輸); ); turn off the lights when you leave a room; use reusable bags instead of plastic bags; ride your bike or walk to school or work; stop using paper napkins (n. 餐巾紙餐巾紙);recycle books and paper I think that everyone should use public transpor

18、tation. I disagree. Its difficult for parents with young children to use public transportatio n 1. We cant afford to wait any longer to take action! afford v. 承擔得起承擔得起;買得起；提供買得起；提供, 給予給予 常與常與can, be able to連用連用 afford sth. 買得起買得起/承受得起某物承受得起某物 afford to do sth. 有能力做某事有能力做某事/負擔得起做負擔得起做 某事某事 e.g. Can y

19、ou afford the mobile phone? We cant afford to pay such a price. afford 拒絕拒絕 turn into 變成變成; 進入進入 turn over 移交移交 拓展拓展: turn相關短語相關短語 根據(jù)短文內容及括號內所給根據(jù)短文內容及括號內所給(短語短語)動詞的提示，用動詞的提示，用 正確的時態(tài)或語態(tài)補全短文，使短文完整、通順。正確的時態(tài)或語態(tài)補全短文，使短文完整、通順。 The clockwork radio (發(fā)條式收音機發(fā)條式收音機) is the only radio that doesnt need batteries

20、 (電池電池) or electricity. It is powered by turning the handle (手柄手柄) for a minute. Nowadays, thousands of these radios (1)_ (make) every day. The clockwork radio (2)_ (invent) in 1991 by Trevor Bayliss, a British inventor. Trevor had the idea while he (3)_(listen to) some news on the radio about are made was listening to was invented Africa. It (4)_(report) that Africans were dying of Aids and there was no easy way to send them information about the disease. But no one would help Trevo