Unit 2 We have not found life on any other planets yet.Teaching modelReading and writingTeaching methodPWPTeaching aimskey vocabulary: none, environment, solar, system, solar system, group, universe, light, out, communicatekey structures: However, we have not found life on any other planet yet. Scientists have also discovered many other galaxies in the universe. Grammar: the present perfect tenseTeaching Objectives 1.To be able to summarise a passage2.To be able to describe a picture using the present perfectTeaching Steps Period 1Step1 Lead-in and 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) galaxy; planet; solar system; star; universe _2、Translate the following phrases into English. 1.數(shù)億的 _2.運(yùn)轉(zhuǎn) _3.太陽系 _4.遙遠(yuǎn) _5.足夠遠(yuǎn) _6.和聯(lián)系 _7.沒有一個人 _Step4 The study group present the answers and say how to get the answers.Step5 Exercise. 根據(jù)句意及漢語提示寫出正確的單詞。1. Well play against _ (組) Two thisafternoon.2. The _ (光線) in the room is too dark. Youd better not read books.3. There are a lot 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. 用already, yet, 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. Dont worry. We have _ helped you sweep the classroom. 5. Have you done your work _? Sorry, but I will finish it in one hour. 根據(jù)提示用適當(dāng)?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 theearth _ (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.