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Unit 2 Saving the EarthTopic2 All these problems are very serious.pollution预习导纲预习导纲读读1a，在文中划出以下短语并大声朗读。，在文中划出以下短语并大声朗读。1、结果、结果_ 2、砍倒、砍倒_3、变成沙漠、变成沙漠_ 4、阻止某人做某事、阻止某人做某事_5、人、人/人类人类_ 6、对、对有害有害_7、吹走、吹走_ 8、冲走、冲走_9、沿大街走、沿大街走_ 10 、大量肥沃的土地、大量肥沃的土地_二、读以下句子，翻译并探究。二、读以下句子，翻译并探究。1.Trees can also stop the wind from blowing the earth away.译：译：_ They can also stop the water from washing the earth away.译：译：_探究：两句均使用了探究：两句均使用了stop sb.(sth.)from doing sth.意思为意思为_.此此句型可用句型可用_来替换。在口语中，来替换。在口语中，from 可省去。同类句型还有可省去。同类句型还有_、_.但但from不能省略。不能省略。练一练：练一练：Its too cold today.Remember to wear a mask(面罩面罩)to _ you from catching a cold.Ok，I will.A.prevent B.encourage C.provide D.destroy2.Cutting down trees is harmful to human beings,animals and plants.译译_探究：探究：cutting down trees是是_词短语在句子中作词短语在句子中作_语，谓语，谓 语用语用_数。数。练一练：练一练：1)散步是我的爱好。散步是我的爱好。my hobby.2)阅读使人完美。阅读使人完美。a man .3.Although we have built“The Great Green Wall,we still need to do something to protect the environment.译译_探究：探究：although 是是 词，有词，有“虽然，尽管和虽然，尽管和“不过，然而不过，然而两层意思，引导两层意思，引导 状语从句，可以和状语从句，可以和 互换，互换，although 较正式，较正式，更为口语化，使用更普遍些。更为口语化，使用更普遍些。注意：注意：although 引导的从句不能与引导的从句不能与but,however同时连用，但同时连用，但常与常与yet,still 连用。连用。练一练：虽然他老了，但是他仍然继续努力工作。练一练：虽然他老了，但是他仍然继续努力工作。_ he_ old,he still_ working hard.many trees cut downforests gonewash the earth away冲走冲走change into desert转换成，变成转换成，变成沙漠沙漠e.g.A lot of rich land has changed into desert because people have cut down too many trees.sandstormscome into being n.沙尘暴沙尘暴The boy and girls are talking about.different types of sandstorms the reasons for sandstorms A.sandstorms in different cities 1b Listen to 1a and choose the best answer.Focus on the main idea of the conversation when you listen for the first time.Listen and answer the questions 1.Whats the weather like today?Its bad.The wind is so strong.And the sand really hurts face.2.What causes these sandstorms?People have cut down too many trees.As a result,a lot of rich land has changed into desert.3.Do we still need to do something to protect the environment?Yes,we do.Although we have built“The Green Great Wall,we still need to do something to protect the environment.conj.虽然，尽管，即使n.沙沙 BDo you know?A直击中考直击中考1.At present,children mean _ to most parents in China.A.everything B.nothing C.angthing D.something (河南河南.14)2.He thinks himself somebody,but we think him _.A.nobody B.anybody C.somebody D.everybody (河南河南.13)3.The exam is 3 days away.Make sure youve got _ ready.A.something B.anything C.everything D.nothing4.Turn off the TV.Theres _ on it.OK.Lets listen to music for a moment instead.A.something new B.nothing new C.new something D.new nothingAACB1a Listen,look and say.1c Read 1a and complete trees functions.Trees can stop the wind from blowing the earth away.A lot of water can be saved by forests.They can also stop the water from washing the earth away.Trees functions K:wind;sand;anything M:sandstorms J:cut down;as a result;change into M:affect J:stopfrom;blow away K:can be saved J:wash away K:is harmful to;although;do something Act out the dialog in pairs 2 Complete the sentences with the correct forms of the given phrases in the box.as a result,change into,do something,stopfrom,blowaway 1.People have cut down such a large number of trees that the land _desert.2.There are fewer trees left,so the wind always _ the earth _.3.Air pollution has become a serious problem,so we must _ to reduce it.4.we should try our best to _ people _ cutting down the trees.5.In the future,human beings can protect the trees well._,animals will live a happy life in the forest.has changed intoblows awaydo somethingstopfromAs a result3 Do you know how sandstorms come into being?Number the pictures and talk about the sandstorm in groups.415362wash the earth awaymany treeschange into desertforests gonesandstorms come into beingcut down trees4 A.Listen to the passage and circle the phrases you hear.become weaker destroy the environment disappear rapidly on the earth enough bamboo to eat4 B.Listen again and fill in the blanks.1.Now some kinds of animals are becoming _ _ _.2.Some animals are_ _ _dying out completely.3.In the past,pandas lived a quiet life and had _ _food.4.Humans have _ _ _ the importance of protecting animals.5.We should _ _ _to protect them.do our bestin danger ofplenty ofcome to understandfewer and fewer Lily,would you like _ to drink?Cindy is very busy now.She needs _ to help her.Is there _ wrong with your computer?Jim looked for his pencil-box _,but he didnt find it.I stayed at home last week.I didnt go _.Use someone,something,anything,somewhere,anywhere to fill in the blanks.something someone anythingsomewhereanywhere 选词填空选词填空protect,from,something,pass,rise,deal,not only,try,recycle,collect As time goes by,man is making the earth sick.Its very important_ with the rubbish in cities.This is because rubbish _ pollutes the environment but also does harm to our health.We are _ to find some ways to do with the rubbish.For example,we can_the rubbish and then sort them.We can still _ waste paper,old bottles and glass.Water pollution,of course,is a big problem in the world,so we must stop the factories _ pouring waste water into rivers.Now the temperature of the earth is _,and she is calling for(要求要求 )help.Our country _ some laws to protect the environment.As a student,we shouldnt litter _or spit in public.We must try our best _ the environment.Because we have only one earth.to dealnot onlytryingcollectrecyclefromrisinghas passedanythingto protectWe learn:1.Some words:sand,although 2.Some phrases:change into,human being 3.Some sentences:(1)As a result,a lot of rich land has changed into desert.(2)Trees can stop the wind from blowing the earth away.We can:1.Use the indefinite pronoun and adverb.2.Talk about the sandstorm and its harm.Summary Read 1a.Memorize the useful expressions and key sentences which we learn today.Finish Section A in your workbook.Preview Section B.
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