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1、Unit 2 Saving the Earth Topic 2 All these problems are very serious.,Section D,Grammar,None,anywhere,Everyone,everything,Indefinite pronoun and adverb 不定代词和副词 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
2、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? 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.,
3、1. Which would you like to drink, tea or coffee? _, thanks. Im not thirsty. A. Either B. Neither C. Little D. Few 2. The students are doing some cleaning. Some are sweeping the floor, _ are cleaning the desks and chairs. A. other B. the other C. another D. others 3. My parents are _ doctors. A. both
4、 B. all C. either D. neither 4. There is _ with my computer. Can you help me? A. wrong anything B. anything wrong C. wrong something D. something wrong 5. The wind was blowing strongly. _ people walked in the street. A. Little B. A little C. Few D. A few 6. Hurry up. There is _ time left. A. a littl
5、e B. little C. a few D. few,Exercises,Functions,_ 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,wat
6、er 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
7、 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 prot
8、ect 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?
9、( ) 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 f
10、resh water from places including rivers, lakes and underground.,1,2,3,名词 avoid 代词 动名词,v.防止，避免,v.发现，找到,Language points,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？,2.we should discover ways to reuse water.我们需要找到再利用水的方法。,thirsty,adj.缺水的
11、;（口）渴的,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.,Language points,3.Although the world is hun
12、gry, it is even thirstier 虽然世界是饥饿的，但是他更渴。,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。,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 avo
13、id 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
14、.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 informat
15、ion.,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 t
16、ry 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
17、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 t
18、ry our best to save water and our planet. Student Union,You can write it like this.,Project,Making Posters About Natural Resources,Divide the class into several groups: Water Group, Tree Group, Soil Group Each group should discuss their own uses, the problems that they face and their wishes. Then gi
19、ve a report in class. Example: Uses: I am soil. Plants cant grow without me. People use me to make many things Problems: Sometimes people use too many chemicals in the fields. Whats worse, they put waste into the land So Im hurt. Please help me. Wishes: I hope human beings can protect and take care
20、of me. And then I could do more useful things for them 3. Make some posters with the result.,Exercises,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 _(
21、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,We learn: 1. some words: avoid, discover, thirsty, nearly, law 2. some phrases: day by day, be short of
22、 3. some sentences: (1)But peoples need for water is increasing day by day. (2)While nearly of the earth is covered with water, we are still short of drinking water. We can: 1.Talk about ways of saving water. 2.Summarize and use the indefinite pronoun and adverb correctly. 3. Write a proposal.,Summary,Assignment Read 1a. Review the useful expressions and key sentences which we learn in this topic. Preview Section A in Topic 3.,Thank you !,