人教九年级Unit作文语法复习优质公开课课件.ppt

1、Unit 13We are trying to save the earth!Section B 3b-Self Check1.Learn to write:How to protect our environment（热门话题，中考常考）2.复习词形转换3.复习现在进行时，现在完成时，情态动词，被动语态和used to 4.练习册答疑近年来，环境污染问题越来越严重，它对人们的生活和健康造成了极大的危害，保护环境人人有责，作为中学生，我们应该从我做起，行动起来保护地球环境，爱护我们共同的家园，请以“How to protect our environment”为题写短文。（不少于80词）要点：

2、1.举例说明1-3个环境问题2.应采取怎样的措施保护环境（绿色出行：选择步行，公交;清除垃圾，不乱扔；节约能源，不浪费水，电.）(可用first,second,third等使文章有条理)3.提出倡议（可用in a word,Lets）作文指导：作文指导：开头句：开头句：1.众所周知，地球的环境正变得越来越差。众所周知，地球的环境正变得越来越差。2.在地球上有各种各样的污染在地球上有各种各样的污染,例如水污例如水污染，噪音污染，空气污染染，噪音污染，空气污染,土地污染土地污染.As we all know,the environment of the earth is becoming wors

3、e and worse.There are different kinks of pollution on the earth,such as water pollution,noise pollution,air pollution and land pollution.3.一些人没有干净的水喝。一些人没有干净的水喝。4.河里看不到鱼，山上看不到树。河里看不到鱼，山上看不到树。Some people even have no clean water to drinkWe cant see fish in the water or treeson the hills中间句：中间句：5.为了保护

4、环境，我们应该从自身做起。为了保护环境，我们应该从自身做起。6.我们最好乘公交车或者步行上学而不我们最好乘公交车或者步行上学而不是开车是开车To protect the environment,we should start from ourselves.Wed better take the bus or walk to school instead of driving cars.7.购物时我们应该使用购物篮代替塑料袋。购物时我们应该使用购物篮代替塑料袋。8.不要到处扔垃圾，我们应该帮助清洁不要到处扔垃圾，我们应该帮助清洁我们城市的街道我们城市的街道We should use shoppi

5、ng baskets instead of plastic bags when shopping.Dont throw away rubbish everywhere,we should help clean up the street in the city.9.当我们离开房间的时候要关灯。当我们离开房间的时候要关灯。10.当我们洗头的时候要关掉淋浴当我们洗头的时候要关掉淋浴Turn off the lights when we leave the room.Turn off the shower when we wash our hair.结尾句：结尾句：11.保护环境，人人有责。保护环境

6、，人人有责。12.让我们一起努力来使我们的地球更美让我们一起努力来使我们的地球更美丽！丽！Its everyones duty to protect the environment.Lets work together to make our earth more beautiful!How to protect our envronmentEnvironment is important to all of us.When we are in a good environment,we can feel happy,healthy and relaxed.However,there are

7、different kinds of pollution on the earth now,Its our dury to protect the environment.Here are some small things we can do.Firstly,choose green ways to travel.We d better go to school on foot or by bike.And we can use the public transportation.Secondly dont throw away rubbish everywhere.We help clea

8、n up the streets in our city.This can help protect our environment.Thirdly.try to save energy.In life,we mustnt waste any water or electricity.When we leave our room,we should turn the lights off.In a word,its important to protect our environment.Let s take action from now on 词形变换词形变换 一一.名词变形容词名词变形容

9、词 rain snow sleep sun 5.fun 6.noise 7.friend 8.luck 9.salt 10.health 11.wealth 12.love rainy snowy sleepy/asleep sunny funny noisy friendly lucky salty healthy wealthy lovelyactivecareful/carelessluckindependentknowledgeablenoise一般过去时被动式：was/were+过去分词It is unpleasant to look at,smelly,inventor/inven

10、tionscientificsucceeddiedangerused to意为“过去常常做某事”，指的是过常与already,yet,before,just,so far,recently,ever never,People should take public transportation more.rubbish coming out of the bins,and flies,当我们洗头的时候要关掉淋浴deep n.变变adj.color use care help 5.hope 6.beauty 7.meaning 8.cheer 9.peace 10.success 11wonder

11、 12.harm colorful useful/useless careful/careless helpful/helpless hopeful/hopeless beautiful meaningful/meaningless cheerful peaceful successful wonderful harmful n.变变adj.China Japan America England 5.Italy 6.Canada 7.Australia 8.nature 9.tradition 10.center 11.medicine 12.nation Chinese Japanese A

12、merican English Italian Canadian Australian natural traditional central medicalnational n.变变adj.danger humor fame wood 5.gold 6.knowledge 7.pride 8.energy 9fool 10.science 11talent 12.electricity dangerous humorous famous wooden golden knowledgeable proud energetic foolish scientifictalented electri

13、c/electronic 词形变换词形变换 二二.形容词变名词形容词变名词 different confident independent patient 5.important 6.silent 7.difficult 8.safe 9social 10.active 11able 12.true difference confidence independence patience importancesilence difficulty safety societyactivity abilitytruth adj.变变n.magic proud happy ill 5.kind 6.f

14、air 7.sad 8.shy 9.direct 10.warm 11.deep 12.foreign magician pride happiness illness kindness fairness sadnessshyness directionwarmth depth foreigner 词形变换词形变换 三三.动词变名词动词变名词 educate create introduce invent 5.pollute 6.protect 7.suggest 8.graduate 9.congratulate 10.pronounce 11.examin 12.express educa

15、tion creationintrodution invention pollution protection suggestiongraduation congratulationpronunciation examinationexpression v.变变n.agreementachievement development punishmentexcitementencouragement celebration collection communicationsolution beliefpleasure v.变变n.act invent work run 5.die 6.advise

16、 7.decide 8.succeed 9.serve 10.fail 11.believe 12.discover actor/action inventor/inventionworker runner death advice decision success servicefailurebelief discovery 词形变换词形变换 四形容词变副词四形容词变副词 careful lucky terrible heavy 5.sudden 6.noisy 7.easy 8.possible 9.different 10.angry 11.polite 12.usual careful

17、ly luckily terribly heavily suddenly noisily easily possibly differently angrily politely usuallyDear Sir/Madam,I have lived in this town ever since I was born and I love this town very much.I think that there are beautiful areas in this town,but there are also areas that arent attractive,like the r

18、ubbish disposal areas at the bottom of our apartment blocks.There is rubbish coming out of the bins,and flies,cockroaches and rats running all over the rubbish.It is unpleasant to look at,smelly,and it makes the environment very unhealthy.The problem is there because the rubbish collectors do not co

19、me often enough to collect the rubbish.The people living here may also be throwing away too much rubbish.We could try to ask people to produce less rubblsh.I sugest that rubbish collectors collect rubbish more often as well.I believe that a better environment can be created in this town and we could

20、 all work together to acheive it.Yours faithfully,Wang Xi2 Match each statement with the grammar structure.StatementThe river used to be so clean.We have seen many changes in the environment.People should take public transportation more.The river is polluted by factories.The air pollution is getting

21、 worse and worse.GrammerPresent progressiveModal verbsPassive voiceused toPresent perfect 现在进行时现在进行时表示现阶段或现在正在发生或进行的动作。表示现阶段或现在正在发生或进行的动作。基本结构：主语基本结构：主语+am/is/are+现在分词现在分词常与常与now,these days，at present,this week等等时间状语连用，另外句首有时间状语连用，另外句首有look,listen 等词等词暗示时，常用现在进行时暗示时，常用现在进行时。现在完成时现在完成时表示过去发生或完成的动作对现在

22、造成的影响或结果；表示过去发生或完成的动作对现在造成的影响或结果；表示过去发生的动作或存在的状态一直延续到现在，还表示过去发生的动作或存在的状态一直延续到现在，还可能继续下去。可能继续下去。基本结构：主语基本结构：主语+have/has+过去分词过去分词特征：不能与表示具体的时间状语连用。特征：不能与表示具体的时间状语连用。常与常与already,yet,before,just,so far,recently,ever never,since+时间点时间点,for+时间段时间段,in the past/last three years，、等时间状语连用等时间状语连用被动语态被动语态当我们不知道

23、谁是动作的执行者或者没必要指出当我们不知道谁是动作的执行者或者没必要指出动作的执行者或者需要强调动作的承受着时一般动作的执行者或者需要强调动作的承受着时一般用被动语态用被动语态被动结构，归纳如下：被动结构，归纳如下：1.一般现在时被动语态：一般现在时被动语态：am/is/are+过去分词过去分词2.一般过去时被动式：一般过去时被动式：was/were+过去分词过去分词3.情态动词情态动词+be+动词的过去分词动词的过去分词。used to 结构结构used to意为意为“过去常常做某事过去常常做某事”，指的是过，指的是过去的习惯性动作去的习惯性动作,目的在于与现在形成对照。目的在于与现在形成对照。used to是个情态动词，其中的是个情态动词，其中的to是不定式是不定式符号，后面跟动词原形。在美式英语中。它符号，后面跟动词原形。在美式英语中。它的疑问式是：的疑问式是：Did 主语主语use to do sth？否定式是：主语否定式是：主语didnt use。