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1、,Unit 2 Saving the EarthTopic 2 All these problems are very serious.,Section D,城北学校,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加后缀构成的不定代词、副词常用于肯定
2、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.,1.Which would you like to
3、 drink,tea or coffee?_,thanks.Im not thirsty.A.EitherB.NeitherC.LittleD.Few2.The students are doing some cleaning.Some are sweeping the floor,_ are cleaning the desks and chairs.A.otherB.the otherC.another D.others3.My parents are _ doctors.A.bothB.allC.either D.neither 4.There is _ with my computer
4、.Can you help me?A.wrong anything B.anything wrong C.wrong somethingD.something wrong5.The wind was blowing strongly._ people walked in the street.A.LittleB.A littleC.FewD.A few 6.Hurry up.There is _ time left.A.a littleB.littleC.a fewD.few,Exercises,Functions,_ a result（结果）,a lot of rich land has c
5、hanged _（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,water pollution,Imagine you are water.Please tell us your functions,problems and wishes.,Im wate
6、r.I used to be Factories usually pour I wish human beings,预习导纲,一.读1a内容，在文中找出下列短语并画出来然后朗读。1.似乎有最佳答案_ 2.从海水中提取出盐 _3.解决水短缺问题_ 4.保护水资源_5.在这领域取得些进步_ 6.一天一天地_7.将近3/4的地球_ 8.由-覆盖 _9.缺少饮水_ 10.使用淡水_,二.读下列句子并探究。1.1.How can we avoid a serious water shortage?译：_探究：avoid _ 词，意为_.其后可接名词或代词作_语，也可接_作宾语，但是不能接不定式作宾语。练
7、一练：To_ answering my questions,she left the hall.A.offer B.escape C.avoid D.refer想一想：除avoid仅用动名词作宾语外，还有：_（完成），_（喜欢），_（练习），_(保持），_（介意）等词。,2.If scientists can find cheaper ways to do it,译：_Third,we should discover ways to reuse water.译：_探究：find意为_,着重指找到的结果。discover意为_,表示“偶然”发现客观存在的事物、真理或错误。find out 意为
8、_,常指经过研究了解或询问，找出事实真 相或原 理、方法。练一练：Can you_ what time the train leaves?A.find B.find out C.invent D.discoverNewton _ the law of gravitation（万有引力定律）A.found B.found out C.invented D.discovered,3.While nearly of the earth is covered with water,we are still short of drinking water.译：_。探究：nearly_词，意为_.常可与a
9、lmost换用，但在具体数字前常用nearly.not修饰nearly意为“远非”，“远不及”。almost 可以修饰more than,too,nothing,nobody,nowhere,no one,none,never 等词，nearly 则不行.如：Healmostknockedmedownbeforehesawme.Almostnoone(=Hardlyanyone)believesher.几乎没有人相信她 练一练：My eyesight was_ destroyed in that accident.Thanks to Dr Beker,I enjoy the beautiful
10、 world again.A.completely B.hardly C.quickly D.nearly,单项选择1.We need to _ the salt away from the sea water.But its cost is _.A.get,expensive B.keep,cheap C.take,high D.get,low2.Although the world is hungry,it is _ thirstier.A.much B.even C.very D.so3.Scientists have _ in reusing water these years.A.m
11、ade some progress B.succeeded C.worked well D.done worst4.Because of water pollution,we are_ drinking water in our daily lives.A.short of B.short for C.pleased with D.angry at,1a Read the passage and put the following paragraphs in the correct order.,()The sea seems to have the best answer.There is
12、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 shou
13、ld 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?()
14、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
15、from places including rivers,lakes and underground.,1,2,3,1b 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 waterin
16、g 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 so
17、lve 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
18、 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
19、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,l
20、ets 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.,Project,Making Posters About Natural Resources,Divide the cl
21、ass 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 give 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 chem
22、icals 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 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 fro
23、m 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 b
24、y day,thirstier,nearly,1.How did you get the MP4,from a shop or by phone?_.I always like shopping online.A、None B、Neither C、Both D、All 2.The trees _ well if we _ them.wont grow;dont take good care of B.dont grow;dont take good care of C.dont grow;wont take good care of D.wont grow;wont take good car
25、e of3.We _ many deserts _ green land so far.changed;into B.have changed;into C.are changing;into D.change;into4.You cant _ people from saying what they think,but you can change yourself.A.stop B.prevent C.keep D.A,B,or C,做一做,B,A,B,D,We learn:1.some words:avoid,discover,thirsty,nearly,law 2.some phra
26、ses:day by day,be short of 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,AssignmentRead 1a.Review the useful expressions and key sentences which we learn in this topic.Preview Section A in Topic 3.,Thank you,
