Unit 2 Topic 2 Section D课件仁爱版英语九年级上册.pptx

Unit 2 Saving the Earth Topic 2 All these problems are very seriousSection D,Language goals,By the end of the class, you will be able to1.Master the following words ,phrases and sentences:Words： avoid, discover, thirsty, nearly, law Phrases: day by day, be short of Sentences：But peoples need for water is increasing day by day. While nearly of the earth is covered with water, we are still short of drinking water.2. Master Indefinite Pronoun and Adverb,Grammar,None,anywhere,Everyone,everything,Indefinite pronoun and adverb一、构成。不定代词、副词是由some, any, no, every与thing, one , body, where 等构成。e.g. something, someone, nowhere, anybody等。二、用法。1通常情况下,由some, every加后缀构成的不定代词、副词常用于肯定句；由any加后缀构成的不定代词、副词常用于疑问句、否定句中。e.g. You will find your bag somewhere. Can you hear anything?,Grammar,2. 注意：当说话人希望得到肯定答复,或是表示建议、请求等意图时,something, somebody, someone也可以用于疑问句中。当要表达“任何人；任何事物”时,anything, anybody, anyone也可以用于肯定句中。e.g. Would you like something to drink? Anybody can do it except Tom.,Grammar,1.【2020东营市】When Anna opened her wallet, she was surprised to find _. It was empty.A. nothingB. anythingC. somethingD. everything2.【2020甘肃武威市】Theres _ wrong with the engineits making strange noises.A. nothingB. anythingC. everythingD. something3.【2020黑龙江绥化】Did you do _ during the last summer vacation?A. something special B. special something C. anything special,A,D,C,_ a result（结果）, a lot of rich land has changed _ （变为）desert. Trees can stop the wind from _ the earth _(吹走）.We shouldnt leave rubbish _ (到处).All these problems are very serious,_(所以) we must do something now.,into,blowing,away,here and there,so,As,Functions,water pollution,Imagine you are water.Please tell us your functions, problems and wishes.,Im water. I used to be Factories usually pour I wish human beings ,1a Read the passage and put the following paragraphs in the correct order.,( ) The sea seems to have the best answer. There is plenty of water in the sea. But we need to take the salt away from the sea water. This is very expensive. If scientists can find cheaper ways to do it, we can solve the problem of the shortage of water. ( ) How can we avoid a serious water shortage? First, we should save water and not waste it. Second, we should protect our water resources and not pollute them. Third, we should discover ways to reuse water. Scientists have made some progress in this field. Today, some large cities are reusing their water. But peoples need for water is increasing day by day. We still dont have enough water. What else can we do? ( ) Although the world is hungry, it is even thirstier. While nearly of the earth is covered with water, we are still short of drinking water. This is because about 97% of the water on the earth is sea water. So we cant use it for watering plants or drinking directly. Humans can only drink and use fresh water from places including rivers, lakes and underground.,1,2,3,名词 avoid 代词 动名词,v.防止，避免,e.g. He avoided answering my questions.,不定式不可以做宾语。,1. How can we avoid a serious water shortage? 我们如何避免水资源短缺呢？,Language Points,thirsty,adj.缺水的;（口）渴的,3.Although the world is hungry, it is even thirstier 虽然世界是饥饿的，但是他更渴。,Language Points,v.发现，找到,2.we should discover ways to reuse water.我们需要找到再利用水的方法。,nearly,adv.几乎，将近,nearly 与almost 区别 ： almost 多表示时间、程度、距离、进度， 且almost 可以修饰more than, too, nothing, nobody, nowhere, no one, none, never 等词，nearly 则不行。nearly只与not连用。 e.g. I have almost never seen him. I nearly didnt hear what the teacher said in class.,4.While nearly of the earth is covered with water , we are still short of drinking water. 尽管地球差不多四分之三都被水覆盖，我们仍然缺少饮用水。,Language Points,1b Read 1a again and answer the questions.,1.Why is our world thirsty when of the earth is covered with water ? 2. What can we do now to avoid the water shortage?,Because about 97% of the water on the earth is sea water, we cant use it for watering plants or drinking directly.,First, we should save water and not waste it. Second, we should protect our water resources and not pollute them. Third, we should discover ways to reuse water.,3.What will be the best way to solve the problem in the future in the passage?,4.Do you know any other ways to solve the problem? What is it?,To find cheaper ways of taking the salt away from the sea water.,2 Discuss in groups different ways of protecting and saving water. Write down the key information.,Example: Pass laws( n.法律) against water pollution. Collect and reuse waste water. ,3. Write a proposal about saving water to all the students in your school.,My dear friends, Water is very important to human beings. Lets do something to protect and save it. First, _ . Second,_. Third, _. Lets try our best to save water and our planet.,My dear friends, Water is very important to human beings. Lets do something to protect and save it. First, we should protect our water resources and not pollute them. The government should also pass laws against the water pollution. Second, we should save water in our daily life, turn off the taps in time, take a shower instead of a bath, and always remember to collect and reuse water. Third, lets try to spread the message about protecting and saving water. Make more people around us know the problem of water shortage and how to help solve it. Lets try our best to save water and our planet. Student Union,You can write it like this.,If we want to use the sea water, we must _ _(拿走） the salt from the sea water. How can we _(避免) a serious water shortage? We should _(找到) ways to reuse water. Peoples need for water is increasing _(一天天).Although the world is hungry, it is even _(更渴的)While _(几乎，差不多) of the earth is covered with water, we are still short of drinking water.,take away,avoid,discover,day by day,thirstier,nearly,Exercises,Homework,Memorize the useful expressions and key sentences which we learn today.2. Preview Unit 2 Topic 3-Section A.,Bye-bye!,