Unit2 Topic2 SectionC （趣味课堂课件）英语仁爱科普版九年级上册

nullnullnullnull 九上Unit 2 Saving the Earth Topic 2 All these problems are very serious. Section C I、Master the new words and phrases： hole, form, rise, oxygen, ozone layer, radiation, directly, carbon dioxide, blanket, escape, the greenhouse effect, refer, during this period, take away, pass through... II、Be able to talk about the harm of pollution and give advice how to protect the environment. III、Combine the key points to form a short passage. Learning aims: Review (1) ___________ of us knows how to stop the bad behavior. (2) I knocked on the door but ___________ answered. (3) Some of these books are better than ___________. (4) She was driving the car with one hand and wiping the window with the ____________. (5) They are beautiful but I am looking for ____________ useful. (6) Is there ___________ you can do to help her? (7) There’re 5 000 people living here and almost __________ has his/her own car. (8) He’s cleverer than ____________ I know. (9) I’ve looked ____________ but I can’t find it. Fill in the blanks using something, anything, others, nobody, everyone, anybody, everywhere, none, other. None nobody others other something anything everyone anybody everywhere Pre-reading Warm up Let’s know about the Greenhouse Effect. New words &expressions The greenhouse effect is good for our earth. But too much carbon dioxide (CO2 ) coming from burning oil, coal and wood causes the climate of the earth to change. the greenhouse effect 温室效应 /'kɑ:bən daɪ'ɑ:ksaɪd / 二氧化碳 After people cut down millions of trees, rain or wind took away the earth. Please refer to the picture. take away 拿走；带走 refer /rɪ'fɜ:/ to 参考，涉及，有关 Now air pollution is destroying ozone (O3: a special kind of oxygen) and makeing a very big hole in the ozone layer. /'əuzəun 'leɪə/ 臭氧层 /'ɒksɪdʒən/ n. 氧气 /həul/ n. 洞，坑 Too much harmful radiation from the sun passes through the hole and reaches the earth directly. /,reɪdɪ'eɪʃn/ n. 放射，放射物 /də'rektli/ adv. 直接地 Too much CO2 has formed a blanket around the earth. The heat from the sun can’t escape so the temperature is rising. /fɔ:m/ v. 出现；形成 n. 种类；形式 /'blæŋkɪt/ n. 毛毯，毯子 /ɪ'skeɪp/ v. 渗出；逃跑；逃脱 rise /raɪz/ v. 上升；起床；升起 While-reading 1a Read and understand. Look at the following pictures and predict the main idea of the passage. fewer trees factory pollution traffic pollution the ozone layer more carbon dioxide Can you match them? 1b Choose suitable titles for Paragraphs 2-6. Then write it down in front of each paragraph. A. Traffic pollution B. Factory pollution C. Fewer trees D. The ozone hole E. More carbon dioxide The earth is 4.6 billion years old. We humans have lived on the earth for only 35 000 years, but during this period, we have changed our planet a lot in many ways. Some things we’ve done are very good for the earth while some are bad. ___________ All over the world, people have cut down millions of trees. When it rains or when the wind blows, the earth is taken away. Forests have become deserts, so many kinds of animals and plants are disappearing. Fewer Trees Scanning ________________ In big cities, cars and buses have polluted the air. Now many people in cities have health problems. _________________ Factories have also polluted the land and the water. As a result, many rivers and lakes are now dead. _________________ Around the earth, there’s a special kind of oxygen called “ozone”(O3). It is important to the earth. But now air pollution is destroying it and making a very big hole in the ozone layer. Too much harmful radiation from the sun passes through the hole and reaches the earth directly. This is very dangerous because this kind of radiation can cause cancer. Traffic Pollution Factory Pollution The Ozone Layer A. Traffic pollution B. Factory pollution C. Fewer trees D. The ozone hole E. More carbon dioxide ___________________ Carbon dioxide (CO2) in the air has increased a lot. It mainly comes from burning oil, coal and wood. This has formed a blanket around the earth. The heat from the sun can’t escape so the temperature is rising. This is called “the greenhouse effect”. It causes the level of the oceans to rise and the climate of the earth to change. All these problems are very serious, so we must do something now. More Carbon Dioxide A. Traffic pollution B. Factory pollution C. Fewer trees D. The ozone hole E. More carbon dioxide 提示：点击图片选择相关段落进行阅读。 Careful reading para.1 para.2 para.5 para.4 para.3 para.6 para.7 The earth is 4.6 billion years old. We humans have lived on the earth for only 35 000 years, but during this period, we have changed our planet a lot in many ways. Some things we have done are very good for the earth while others are bad. back 46亿 同位语 on earth 究竟，到底（用于疑问词后） on the earth 在地球上 在这期间 在很多方面 定语从句， “我们已经做的” while 并列连词 意为“而、却” 表示对比关系 para.1 1b 2. What does our planet mean here? ( ) A. The sun. B. Mars. C. The moon. D. The earth. D __________ All over the world, people have cut down millions of trees. When it rains or when the wind blows, the earth is taken away. Forests have become deserts, so many kinds of animals and plants are disappearing. para.2 Fewer Trees 砍倒 (cut-cut-cut) millions of 数以百万的 时间状从，“当刮风下雨时” be done 一般现在时态的被动语态 become-became-become 各种各样的 back para.3&para.4 ______________ In big cities, cars and buses have polluted the air. Now many people in cities have health problems. ______________ Factories have also polluted the land and the water. As a result, many rivers and lakes are now dead. Traffic Pollution Factory Pollution back 介词短语作后置定语 健康方面的问题 also的位置：实前助后 结果 adj. 干涸的 para.5 _______________ Around the earth, there’s a special kind of oxygen called “ozone”(O3). It is important to the earth. But now air pollution is destroying it and making a very big hole in the ozone layer. (Too much harmful radiation from the sun passes through the hole and reaches the earth directly.) This is very dangerous because this kind of radiation can cause cancer. back The Ozone Layer 过去分词作后置定语 (很多来自地球的有害辐射都透过臭氧层空洞直抵地球) 穿过 1. Is ozone layer important or unimportant? It's very important. 2.(1b 4.) What does the word it in Para.5 refer to? O3. 3. What happened to it now? There is a big hole in the ozone layer. 4. What's the effect of it? It's harmful to all the living things,especially to humans for it does harm to our eyes and skin. 臭氧层 Ozone is a special kind of oxygen. It can protect the earth. para.6 ____________________ Carbon dioxide (CO2) in the air has increased a lot. It mainly comes from burning oil, coal and wood. This has formed a blanket around the earth. The heat from the sun can’t escape so the temperature is rising. This is called “the greenhouse effect”. It causes the level of the oceans to rise and the climate of the earth to change. More Carbon Dioxide 1b 3. In the passage, blanket refers to ____. A. carbon dioxide around the earth B. the ozone layer in the sky C. the forests around the world D. pollution all over the world back A 表程度修饰动词 温室效应 海平面 para.7 All these problems are very serious, so we must do something now. 1b 5. What is the best title for this passage ? ( ) A. Environment Problems B. Pollution on the Earth C. Hope for the Future D. The Greenhouse Effect A back 1c Complete the notes according to 1a. Problem Effect on the environment fewer trees forests become deserts, animals and plants disappear traffic pollution greenhouse effect, level of oceans rising, climate change cars and buses pollute air, health problems pollute land and water, rivers and lakes dead harmful radiation reaches the earth, cause cancer factory pollution ozone hole more CO2 Watch and follow Try to retell 1a The earth is 4.6 _________ years old. We humans have lived _____________ for only 35 000 years, but during this period, we have changed our planet a lot in many ways. Some things we have done _______ very good for the earth _______ others are bad. billion on the earth are while Try to retell 1a All over the world, people have ____________ millions of trees. When it rains or when the wind blows, the earth is ______________. Forests have become __________, so many kinds of animals and plants are disappearing. cut down taken away deserts Try to retell 1a In big cities, cars and buses ______________ the air. Now many people in cities have __________ problems. Factories have also polluted the land and the water. _____________, many rivers and lakes are now________. health As a result dead have polluted Try to retell 1a Around the earth, there’s a special kind of oxygen ________ “ozone”(O3). It is important to the earth. But now air pollution is destroying it and making a very big ________ in the ozone layer. Too much harmful radiation from the sun passes __________ the hole and reaches the earth __________. This is very dangerous because this kind of radiation can cause cancer. called hole through directly Try to retell 1a Carbon dioxide (CO2) in the air has __________ a lot. It mainly comes from burning oil, coal and wood. This has ________ a blanket around the earth. The heat from the sun can’t __________ so the temperature is rising. This is called “the greenhouse effect”. It causes the level of the oceans to _______ and the climate of the earth to change. increased formed escape rise Post-reading 1. 在地球上/究竟，到底 _______________________ 2. 在这段时间、期间 _______________________ 3. 拿走 ________________ 4. 许多种类的 __________________ 5. 对......重要 ______________________ 6. 穿过这个洞 _________________________ 7. 温室效应 _______________________ 8. 从......逃走 __________________ 9. 导致癌症 _________________________________________________ 10.涉及......./有关......./提到....... __________________ Find the phrases. on the earth/on earth during this period take away many kinds of be important to/for pass through the hole the green house effect escape from cause cancer 引起/导致某人做某事：cause sb. to do sth. refer to sb./sth. Surf the Internet to collect more information about environmental problems and effects. Then discuss the information in groups and take notes. 2 3 Combine the key points in 1c and 2 to form a short passage and pay attention to the proper linking words. As we all know, water pollution is becoming more and more serious. Some factories pour waste water into the rivers. As a result, it makes the water dirty and smell terrible. Most of fish in the water have died and we can’t swim in the water. Water is very important to human beings, so we should do our best to protect and save it. Luckily, our government is taking measures to protect the water from pollution. You can write it like this: 1. Some things we have done are very good for the earth while others are bad. Key points be good for 意为“对...有好处” be good to sb. = be friendly/nice to sb. 意为“对...友好” be good with sb. 意为“和...相处的好，善于与某人相处” be good at sth./doing sth. = do/does well in 意为“擅长于” 2. Too much harmful radiation from the sun passes through the hole and reaches the earth directly. through prep. 意为“穿过”表示从空间内穿过 across prep. 意为“穿过”表示从物体表面上穿过或沿着某一条线 的方向进行的动作，常和表示“走”一类的动词连用 （walk, run, fly, jump等） past prep. 表示从旁边经过 over 越过、跨过；着重指从上方跨过。 Key points Key points 3. other, another, some...others , 其它的 adj. 另一个/再一个 一些...... 另一些 some...the others, one...the other 一些......其余的 一个......另一个（特指两者中的另一个） （有the表示特指，没the 表示泛指） 1. other pens/books/computers/bags 2. another book/bag 3. There are many people on the beach, some are playing football and others are running. 4. There are 50 students in our class, some are playing games the others are writing. 5. I have two brothers, one is a doctor the other is a teacher. 闯关练习： 1. Lei Feng was always ready to help ______ . A. the others B. others C. another D. the other 2. I have two novels. One is in English, and _______ is in Japanese. A. the other B. another C. other D. others 3. The glass is broken. Get me _______. A. the other B. another C. other D. the others 4. There are ten new books on the desk. Tom took away some of them. ______ were lost. A. the other B. others C. another D. the others B A B D Key points 2. rise 和 raise 的区别： rise vi. （不及物动词，后面没有宾语） rose(过去式） risen (过去分词）“升起” eg. The sun rises in the east. raise vt.（及物动词，紧跟宾语）“举起、养、筹集” raise money = collect money 筹集钱 raise pet dog 饲养宠物狗 raise chilren 抚养孩子 raise one’s hand 举起某人的手 闯关练习： 1. Her temperature is still __________. 2. They _________ glasses to the friendship between the two people. 3. He _______ and walked to the window. 4. Her mother has already _________ enough money for his trip. rising raised rose raised Exercises I.用所给词汇的适当形式或根据汉语提示填空。 1. Mr. and Mrs. Black visited an old town _______ (call) Long Tan last month. 2. The things the doctor __________ (refer) to in his speech have something to do with our health. 3. Recently, too much noise from the factories ___________ (cause) a lot of pollution in the town. 4. Smoking can cause some smokers __________ (have) lung cancer. 5. Forests have become deserts, so many plants and animals are ____________ (appear). 6. It’s reported that one hungry lion ___________ (逃跑) from the national zoo last night. Everyone must pay attention to safety. called referred has caused to have disappearing escaped II.按要求完成句子。 1. Ruth has already got used to the weather here.（改为否定句） Ruch ________ got used to the weather here ______ . 2. Humans have lived on the earth for only 35 000 years. （对画线部分提问） ______ _______ have humans lived on the earth? 3. Tim likes playing football. （用swimming改为选择疑问句） Which sport _______ Tim like, playing football _______ swimming? 4. It is two days since Lily borrowed Tom’s red pen.（改为同义句） Lily _______ _______ Tom’s red pen for two days. 5. 今天早餐我们起晚了。结果，我们错过了早班车。（完成译句） This morning we got up late. _____ a _________ , we missed the early bus. Exercises hasn’t yet How long does or has kept As result Summary We learn: 1. Some words: hole, form, rise, oxygen, ozone layer, radiation, directly, carbon dioxide, blanket, escape, the greenhouse effect, refer... 2. Some phrases: during this period, take away, pass through... 3. Some sentences: All these problems are very serious, so we must do something now. We can: 1. Talk about the harm of pollution. 2. Combine the key points to form a short passage. Homework 1. Learn the new words and phrases by heart. 2. Recite the passage in 1a. 3. Finish Section C in the workbook. 4. Preview Section D. Thank you! Lavf58.18.100 null 176179.17 127560.555 Lavf57.62.100 null 122466.18 $$