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1、Unit 2 We have not found life on any other planets yet. Teaching model Reading and writing Teaching method PWP Teaching aims key vocabulary: none, environment, solar, system, solar system, group, universe, light, out, communicate key structures: However, we have not found life on any other pl

2、anet yet. Scientists have also discovered many other galaxies in the universe. Grammar: the present perfect tense Teaching Objectives 1.To be able to summarise a passage 2.To be able to describe a picture using the present perfect Teaching Steps Period 1 Step1 Lead-in a

3、nd show the aims. Step2 Autonomic learning and question exploration. 1, Listen to the tape and finish A1 and A2. 2, Read the passage together and work in groups to finish A3 and A4. Step3 Work in groups and finish the following exercise. 1、Put the words and expressions in order. (small — large

4、) galaxy; planet; solar system; star; universe __________________________________________________________ 2、Translate the following phrases into English. 1.數(shù)億的 _____________________ 2.運轉(zhuǎn) ________________ 3.太陽系 _______________ 4.遙遠 _________________ 5.足夠遠 __________________ 6.和……聯(lián)系 ____

5、_______________ 7.沒有一個人 ____________ Step4 The study group present the answers and say how to get the answers. Step5 Exercise. Ⅰ. 根據(jù)句意及漢語提示寫出正確的單詞。 1. We’ll play against _______ (組) Two this afternoon. 2. The ______ (光線) in the room is too dark. You’d better not read books. 3. There are a lo

6、t of strange things in the 　_______ (宇宙). 4. We should try our best to make our 　____________ (環(huán)境) much cleaner. 5. — It snowed heavily last night. Is everyone in our class here today? — Yes, and _______ (沒有一人) of us was late for school this morning. Ⅱ. 用already, yet

7、, just, ever或never完成下列句子。 1. I have ______ done the heavy work and now I feel very tired. 2. —Mary, have you read any books about Mars? —No, I have _______ read a word about it. 3. —Have you ______ been to the Great Wall in China, Vicky? — Of course, I have. 4. Do

8、n’t worry. We have _______ helped you sweep the classroom. 5. — Have you done your work _______? — Sorry, but I will finish it in one hour. Ⅲ. 根據(jù)提示用適當?shù)亩陶Z完成句子，每空詞數(shù)不限。 1. I often ________________ (與……聯(lián)系) my first teacher. 2. The little boy wants to know why the earth ___________ (圍繞……轉(zhuǎn)) the sun. 3. Do you know how many stars there are in the ___________ (太陽系)? 4. The programme on TV has attracted 　____________ (數(shù)百萬) people.