八年级英语下册unit7课件.pptx

late later-latestearly earlier earliestbigbigger-biggestfluently/difficultmore,most重读闭音节、末尾只有一个重读闭音节、末尾只有一个辅音字母双写加辅音字母双写加 er er 或或 estest单音节词在词尾比较级单音节词在词尾比较级加加-er或最高级加或最高级加-est以以e结尾的词，只需加结尾的词，只需加r 或或st以辅音字母加以辅音字母加 y y 结尾双音节结尾双音节词变词变 y y 为为 i i 加加 er er 或或 estest部分双音节和多音节词在原部分双音节和多音节词在原级前加级前加 more more 或或 mostmost少数以少数以er,ow 结尾的双音节结尾的双音节词加词加-er-esttalltaller-tallest clevercleverer-cleverestcheap,cold,small,warm,young,highfine,nice,safehappy,busy,dirty,easy,lazy,prettyfat,hot,red,thin,wet,sad narrow,yellow quickly,slowly,useful,careful,popular,modern,形容词和副词比较级和最高级构成形容词和副词比较级和最高级构成 (规则变化规则变化)第1页/共80页 不规则变化：不规则变化：原级比较级最高级 good/well better best bad/ill worse worst little less least many/much more most far farther/further farthest/furthest old older/elder oldest/eldest第2页/共80页形容词与副词的原级1.无比较对象时用。无比较对象时用。I am tall.He is hungry.2.原级前的修饰词原级前的修饰词。very quite so too pretty.3.肯定肯定 as+原级原级+asArt is as interesting as music.Play as well as you can.4.否定 not+as(so)+原级+asEnglish is not so/as difficult as science.She does not study so/as well as I do.第3页/共80页形容词和副词比较级的用法形容词和副词比较级的用法 1.Who runs faster,he or she?2.He runs faster than she.3.He runs much faster than she.4.He becomes healthier and healthier.5.The more you exercise,the healthier you will be.6.She is less healthy than he.第4页/共80页1.表示两者之间的选择表示两者之间的选择,可用可用“Which/Who +比较，比较，or?”.2.2.表示两者之间的比较，通常用连词表示两者之间的比较，通常用连词 than than 引导，引导，表示表示“更更一些一些”3.much/far/a lot,even,still,a little/a bit 修饰比较级修饰比较级,表示程度表示程度.Who runs faster,he or she?He runs faster than she.He runs much faster than she.第5页/共80页4.“比较级比较级+and+比较级比较级”表示表示“越来越越来越”5.“the+比较级,the+比较级”表示“越,越”6.表示不及另一方时，用表示不及另一方时，用“less+原级原级+than”(双音节和多音节词双音节和多音节词)He becomes healthier and healthier.The more you exercise,the healthier you will be.She is less healthy than he.He is healthier than she.Shanghai is becoming more and more modern.第6页/共80页1.比较级比较级+and+比较级比较级 越来越越来越2.the+比较级比较级,the+比较级比较级 越越,越越 3._you are,_mistakes you will make.(你越仔细，做错的题目就越少）4._you eat,_youll be.(你吃得越多,就越胖)5.Alice writes well.Mary writes _ than she.(甚至更好）The more carefulthe fewerThe morethe fatter1.The girl becomes _.(越来越漂亮）more and more beautiful2.The weather is getting _.(越来越槽糕）worse and worseeven/still better第7页/共80页1.表示三者或三者以上比较表示三者或三者以上比较,可用可用”Which/Who +最高级最高级,or?”表示表示.2.最高级最高级+of/among(同类比较同类比较)in(范围比较范围比较)4.one of+形容词最高级形容词最高级+名词复数表示名词复数表示“最最 之一之一”3.序数词修饰最高级形容词和副词的最高级的用法形容词和副词的最高级的用法Who is the tallest,Tom,Mike,or Jack?Tom is the tallest of the three.Mike is the second tallest student in our class.Jack is one of the tallest students in our class.Tom runs(the)fastest in our class.第8页/共80页 3.Lin Tao is _ in the class because he never gets to school on time.（最懒的学生之一）（最懒的学生之一）4.Edison was_ in the world.(最伟大的发明家之一）最伟大的发明家之一）one of the laziest studentsone of the greatest inventors1.The Yangtze River is_ river in the world.(第三长河）第三长河）the third longest2.The Atlantic is _ ocean in the world.(第二大洋）第二大洋）the second biggestExercise:一、翻译句子：一、翻译句子：第9页/共80页二、同义句转换二、同义句转换 1.Flat A is more expensive than Flat B Flat B is _ _ than Flat A.Flat B is _ _ Flat A.Flat B is not _ _ _ Flat A.2.I prefer maths to English.I like maths _ English.better than3.He is the tallest student in the class.He is _ in the class.taller than any other studentany other+名词单数名词单数lessexpensivecheaperthanasexpensiveas第10页/共80页 1.Hainan is a very large Island.It is the second _ island in china.(large)2.Our teacher is as _ as before.(Our teacher is as _ as before.(busy).).3.He is _ among us.(3.He is _ among us.(careful)4.Li Lei jumped far _ than Jim.(far)4.Li Lei jumped far _ than Jim.(far)5.The busier he is,the _ he feels.(5.The busier he is,the _ he feels.(happy)6.I think Yao Ming is one of _ basketball players in NBA.(hot)busythe most carefulfartherhappierlargestthe hottest三、完成句子三、完成句子第11页/共80页1.Complete the chart.AdjectivesComparativesSuperlativeshighdangerouslongpopularhigherhighestmore dangerous most dangerouslongerlongestmore popularmost popular第12页/共80页The worlds highestmountain in the world.Do you know howhigh it is?It is 8,844 metershigh.Qomolangma第13页/共80页Do you know Sahara is the biggest desert in the world?Yes,it is about 9,600,000 square kilometers in size.Sahara第14页/共80页The worlds deepest salt lake The Caspian SeaDo you know that how deep the worlds deepest Salt lake?Yes,it is 1,025 meters deep.第15页/共80页the Nilethe longest river in the worldIts 6,671 kilometers long.第16页/共80页The second longest riverin the world-Do you know its name?-It is Amazon.-Do you know how long it is?-Its about 6,500 kilometers long.第17页/共80页The longest river in Asia.The Yangtze RiverDo you know that the Yangtze River is the longest river in Asia?Yes,it is 6,300 kilometers long.第18页/共80页第19页/共80页 Its 8,844 meters high.它有8,844米高。It is meters high(long,wide).它米高（长,宽)。“有多长（宽，高）”时，将数词和数量单位放在表示长宽高的形容词前第20页/共80页翻译句子翻译句子 1.这张桌子两米长，一米宽。这张桌子两米长，一米宽。2.这座山有这座山有1500米高。米高。3.这栋楼这栋楼120米高。米高。4.这本字典有五厘米厚。这本字典有五厘米厚。5.这个湖有多深？这个湖有多深？1025米深。米深。The table is two meters long and one meter wide.The mountain is 1,500 meters high.The building is 120 meters tall.The dictionary is five centimeters thick.How deep is the lake?Its 1,o25 meters deep.第21页/共80页你能写出它的同义句吗？The mountain is 1,500 meters high.The mountain is 1,500 meters in height.The height of the mountain is 1,500 meters.第22页/共80页1.Qomolangma is _ than any other mountain in the world.2.The Sahara is _ desert in the world.3.The Caspian Sea is _ of all the salt lakes.4.The Nile is _ river in the world.1b.Listen and complete the sentences.higherthe biggestthe deepestthe longest第23页/共80页1c.Use the information in 1b to make conversations.A:What is the highest mountain in the world?B:Qomolangma.第24页/共80页A:What is the biggest desert in the world?B:Sahara.A:What is the deepest salt lake in the world?B:Caspian sea.第25页/共80页A:What is the longest river in the world?B:Nile.第26页/共80页4a.Fill in the blanks with the correct forms of the words in the box.1.The Amazon River is one of the _ rivers in the world.Its a little _ than the Yangtze River.2.Qomolangma is 8,844.43 meters_.big much popular long old highlongestlongerhigh第27页/共80页 Its one of the most_ places for serious mountain climbers.3.No ocean in the world is as _ as the Pacific Ocean.4.Although Japan is _ than Canada,it is_smaller.popularbigoldermuch第28页/共80页e.g.Two rivers：_ and _4b.Write two comparisons about two topics.Write true facts.the Yangtze Riverthe Amazon RiverThe Yangtze River is almost as long as the Amazon River.The Amazon is longer than the Yangtze,but the Yangtze is the longest river in China.第29页/共80页4c.Write five questions using comparisons.Then ask your partner your questions.1._2._3._4._5._What is the highest building in our city?Who is the oldest people in our city?What is the most popular street in our city?What is the most delicious food in our city?Where is the busiest road in our city?第30页/共80页_ The Yangtze River is about _kilometers long and the Yellow River is_ kilometers long._ China has the biggest population in the world.Its a lot bigger than the population of the US.2a.Listen and number the facts 1-4 in the order you hear them.6,3005,0005,46430024第31页/共80页_ China is over _ years old.It has a much longer history than the US.The US is not even_ years old._ China is almost as big as the US,and it is the biggest country in Asia.13第32页/共80页2b.Listen again and fill in the blanks in 2a with the numbers in the box._ The Yangtze River is about _kilometers long and the Yellow River is_ kilometers long._ China has the biggest population in the world.Its a lot bigger than the population of the US.6,3005,0005,464300246,3005,464第33页/共80页_ China is over _ years old.It has a much longer history than the US.The US is not even_ years old._ China is almost as big as the US,and it is the biggest country in Asia.135,000300第34页/共80页population 的用法的用法1.What is the population in China?How large is the population of China?Its 1300000000.2.The population of Beijing is 500000.Beijing has a population of 500000.Beijings population is 500000.Beijing is a city with a population of 500000.3.The population of China is bigger/larger than that of the USA.The population of the USA is smaller than that of China.第35页/共80页A:Did you know that China is one of the oldest countries in the world?B:Yes,I did.Its much older than my country.2c.Make conversations using the information in 2a.第36页/共80页Guide：Feel free to ask me anything on todays Great Wall tour.Tourist 1：How long is the wall?Guide：Ah,the most popular question!If were only talking about the parts from the Ming Dynasty,its about 8,850 kilometers long.This makes it the longest wall in the world.2d.Role-play the conversation.第37页/共80页第38页/共80页1FeelfreetoaskmeanythingontodaysGreatWalltour.在今天的长城游中，大家尽管随意问我任何问题。feelfreetodosth随意做某事CanIuseyourbathroom?Yes,feelfree.2ancientadj.古代的古老的Mygrandmotheroftentellsmeoldancientstories.第39页/共80页3protectv.保护Sunglassesareusedforprotectingoureyesinthesun.4AsfarasIknow,therearenoman-madeobjectsasbigasthis.据我所知，再没有像它这样大的人造物体了。asfarasIknow据我所知AsfarasIknow,Tomhasatwinsister.第40页/共80页第41页/共80页5achievementn.成就成绩achievev.ThisisawonderfulachievementinChinesehistory.6southwesternadj.西南的southwestn.Ourhometownisinthesouthwesternpartofthiscity.7thickadj.厚的浓的Thereisthickfoginthemorninginthismountainarea.第42页/共80页8Evenmoreseriousdifficultiesincludefreezingweatherconditionsandheavystorms.更加严峻的困难包括极冷的天气状况和巨大的风暴。1）difficulty困难Ifyouhaveanydifficulties,youcancallmeforhelp.Wefoundthehousewithoutdifficulty.2）includev.包括OursubjectsincludeChinese,Englishmathandsoon.第43页/共80页9freezingadj.冰冻的Itisfreezingoutside,andputonyourwintercoat.10conditionn.条件状况Thepianowasingoodcondition.11takeinLargefishtakesinsmallfishinthesea.第44页/共80页第45页/共80页12succeedv.成功successn.successfuladj.successfullyadv.Ihopeshewillsucceedsoonbyworkinghard.13challengev.挑战Itisabigchallengeforthegirltodohouseworkbyherself.Theboychallengedhisfriendtoafightafterschool.14inthefaceof面对Theyshowedtheircourageinthefaceofdifficulty.第46页/共80页15Thespiritoftheseclimbersshowsusthatweshouldnevergiveuptryingtoachieveourdreams.这些登山者的精神向我们表明：我们决不应该放弃实现自己的梦想的尝试。1）giveupdoingsth放弃做某事Hegaveupsmokingafterhegotoutofthehospital.2）achieveourdream实现。=makeourdreamcometrueHeachievedgreatsuccessinashorttime.第47页/共80页16forcen.力量Thearmywasthemostimportantforceinthecountry.17naturen.大自然Thebeautyofnaturemakespeopleforgettrouble.第48页/共80页Paragraph 1List four dangers for climbers:thick cloudshard to take in air;Freezing weather conditions;Heavy storms;3b.Read the article again and complete the chart.第49页/共80页Paragraph 2List three achievements:1953-Tenzing Norgay and Edmund Hillary were the first to reach the top;1960-The first Chinese team did so;1975 the Japanese Junko Tabei succeeded doing so.第50页/共80页Paragraphs 1&3List four comparisons:most dangerous sport;most popular places;the highest mountain;the most famous mountainbe stronger than the forces of nature第51页/共80页1.Where are the Himalayas?2.How high is Qomolangma?3c.Answer the questions using information from the article.The Himalayas run along the southwestern part of China.It is 8,844.43 meters high.第52页/共80页3.Why do so many people try to climb this mountain even though it is dangerous?4.What does the spirit of the climbers tell us?One of the main reasons is because people want to challenge themselves in the face of difficulties.The spirit of these climbers shows us that we should never give up trying to achieve our dreams.It also shows that humans can sometimes be stronger than the forces of nature.第53页/共80页第54页/共80页2.Match verbs and objects.Then add one more object to each list.VerbsObjects1.reacha.my life,my money,.2.achieveb.the top of a mountain,the library,.3.riskc.my dream,success,第55页/共80页Reach the top of a mountainReach the libraryReach the bus stopReach the agreement（达成协议）Achieve my dreamsAchieve successAchieve the first placeAchieve our goal第56页/共80页Unit 7Whats the highest mountain in the world?第57页/共80页1a.Compare facts about these two animals.Use the language in the box to help you make sentences.第58页/共80页Example sentence:This elephant weighs many times more than this panda.(200 cm taller/shorter,weigh much more/less,eat much more/less eat many times more)This elephant is 200 cm taller than this panda.This elephant eats many times more than this panda.This elephant eat much more than this panda.第59页/共80页1b.Listen and check()the numbers you hear._100 _ 16 _ 20_ 50 _ 120 _ 0.1_ 0.2 _ 150 第60页/共80页1.At birth,a baby panda is about _to _ kilos.2.At birth,a baby panda is about _ cm long.3.A baby panda is not black.It is _ and it has no _.4.A panda can live up to _to _ years.1c.Listen again and complete the sentences.pink0.2150.1teeth2030第61页/共80页1d.Take turns telling your classmates about pandas.A:A baby panda cannot see.B:An adult panda weighs many times more than a baby panda.第62页/共80页1.An elephant weighs(few/many)times more than a dog.2.An adult panda can eat(much/a little)more than a cat.3.Canada is a(little/lot)less _ (crowded)than China.4.A tiger is(much/a little)_ (strong)than a man.3 Circle the correct word and/or fill in the blank with the correct form of the word in brackets for each sentence.crowdedstronger第63页/共80页big bamboo zoo popular cute black and white Sichuanfamous endangered beautiful forest protect2a.Talk about pandas in your class.Use these words to help you第64页/共80页2b.Scan the article to find out what these numbers mean:10,12,200，2,000.ScanningThis means moving your eyes quickly down the page to find specific information.第65页/共80页It is 8:30 a.m.at the Chengdu Research Base.Lin Wei and the other panda keepers are preparing the milk for the baby pandasbreakfast.At 9:00 a.m.,they find that most of the babies are already awake and hungry.When the babies see the keepers,they run over with excitement and some of them even walk into their friends and fall over!第66页/共80页“Theyre so cute and lovely.I take care of them like theyre my own babies.I wash,feed and play with them every day.Theyre very special to me.”Lin Wei loves her job,but it is a difficult one.Pandas do not have many babies,maybe only one every two years.The babies often die from illnesses and do not live very long.第67页/共80页Adult pandas spend more than 12 hours a day eating about 10 kilos of bamboo.Many years ago,there were a lot more bamboo forests and pandas in China,but then humans started to cut down the forests.Scientists say there are now fewer than 2,000 pandas living in the remaining forests.Another 200 or so live in zoos or research centers in China and other countries.第68页/共80页An education program in Chengdu teaches children in cities about pandas and other endangered animals.They send people to schools to tell children about the importance of saving these animals.The children sing songs or make artwork about pandas and other wild animals.Teaching children is one way to help save pandas.The Chinese第69页/共80页government is also planting more bamboo trees so there will be more forests for pandas to live in.We all hope that in the future there will be a lot more pandas than now.第70页/共80页1.What is Lin Weis job?2.What do