Unit 7 Environment學案

unit 7 environmentreading aobjectives1     to learn the cause of the greenhouse effect2     to learn how to be a green consumerteaching procedurewarming-up1.       cartoon talk2.       show some relevant pictures about the pollution. before readingask the questions below: 1. what do you think of these behaviors to the environment?2. do you know what other behaviors human beings harm the environment? during the process, some new words, such as greenhouse effect, atmosphere, cause, food, soil, environmentally friendly, can be imbedded. while reading1.       ask students to read the first paragraph and the headings in the review. then try to answer four questions:1. what is the name of the book?2. a consumer buys and uses things. what do you think a green consumer is?3. what do you think the main topic of the book is?4.how many topics does the review cover?  key:1. the young green consumer guide.2. a consumer that only buys and uses “environmentally friendly” things. 3. the main topic of the book is to save earth.4. 4.2.       scan the rest of the text and then answer the questions below:1. what lets sunlight in and keeps much of the warmth from getting out?2. what is making the greenhouse effect worse?3. what will create mountains of rubbish and pollute our land and seas?4. what is the book asking us to become?   key:   1. the atmosphere around earth.   2. the burning and cutting down of trees.   3. our habit of using things once and then throwing them away.   4. the book is asking us to become “green consumers”.after-reading:1. do the exercise in a3.2. questions: how can we act as green consumers to protect the environment?3. explain some language points.學案

reading a1.根據短文和首字母提示，寫出短文中所缺單詞的正確形式。   the young green c_____ guide says that our world is in danger because we have many e_____ problems.our first problem is the greenhouse effect.it will c_____ the level of seas to rise and d_____ cities and even whole countries.the second one is the act that people d    rainforests.it will cause f_____ because trees can help hold the s_____ .our last problem is people’s bad habits of using thing s.they throw away everything after they use it once.and this c _____mountains of rubbish and it p_____ our land and sea. 2.用所給單詞的適當形式填空。 1)the professor’s talk was so_____ that i nearly fell asleep.(1ife). 2)the factory near our school lets out a lot 0i_____ gases every day.(harm) 3)people create mountains of rubbish and this causes lots of(pollute). 4)think it over before you take_____ .(act) 5)the act of destroying rainforests is making the greenhouse effect much_____ (bad). 6)we should only buy and use“environmentally friendly”things to_____ our world.(safe) 3.根據中文意思填寫所缺的單詞，每條橫線限填一個單詞。 1)為了學好英語，我們要做大量的練習。 _____ _____ _____ learn english well，we must do lot of practice. 2)樹木對我們很重要，因為它們吸收二氧化碳而釋放氧氣。 trees are important to us because they_____ _____ carbon dioxide (二氧化碳)and let out oxygen(氧氣). 3)早睡早起的習慣使我舅舅很健康。 _____ _____ _____    sleeping early and getting up early keeps my uncle healthy. 4)我希望每個人都能成為“綠色消費者”。 i hope everyone can be a_____ _____ . 5)現在我們使用環保袋，因為它們不會污染和破壞環境。 now we use “environmentally friendly’’ bags because they won’t_____ or _____ the environment. 6)他爸爸費了很大勁才阻止了他放棄學習英語。 his father tried very hard to_____ him _____  _____ up learning english.