北师大版英语必修三 UNIT 7 LESSON 3 课件（共73张PPT） .ppt

1、Unit 7 The SeaLesson 3 The Sea World必修三 To get familiar with descriptive texts.To practise using sea animal vocabulary.To practise comparative and superlative structures.ObjectivesDo you know?Aquariums are growing in popularity in Britain.As well as offering spectacular exhibits,like sharks,they off

2、er“hands-on”exhibits for children.1 Which of these animals can you see in the pictures?Part IBefore you startcrabdolphinpolar bearpenguinwhalesealsharkcoralflying fishstarfishtropical fishseashellDo you know?1.Which fish uses a light to attract food?Anglerfish琵琶鱼Toadfish蟾鱼,豹蟾鱼2.Which fish can make a

3、 loud noise?3.What kind of fish appear to fly in the water?鳐鱼Manta Rays4.Which are the smallest fish in the world?Goby刺鳍鱼Do you know all the sites of Underwater World?1.Scan the text quickly and find out the names of the tourist sites of the underwater world.Part IIRead to learnPlaces to see sea cre

4、aturesVirtual Reality VoyageDiscovery PoolSea TheatreOcean FloorPolar WorldUnderwater World2.Read the brochure.Find where you can see these things in Underwater World.1.fish which use a light to attract food2.dolphins in performance3.fish that appear to fly in the water4.sea creatures that children

5、can touch 5.a big icebergVirtual Reality VoyageSea TheatreOcean FloorDiscovery PoolPolar World3.Match these comments from visitors to the different areas of Underwater World.Example1)It was terrible!There are too many in the pool and I dont think they enjoy the show.I think its cruel to make them do

6、 tricks.Sea Theatre2)“How do they stop it from melting?It was great but I felt quite cold after a while.”3)“On the one hand,we loved most of the attractions,especially the one for the children.On the other hand,I didnt think that the cafeteria was as good as it should be.”Polar WorldDiscovery Pool4)

7、“I learned a lot.I mean,I didnt know that a fish could be noisy!However,I thought some of the other effects were less realistic.”Virtual Reality Voyage4.Read the brochure.Find what you can see in these places.Polar WorldOcean FloorSea Theatrepolar bears,real iceberg,the acrobatic seal,penguinsmost b

8、eautiful coral,most unusual fish,some fish”flying”through the waterintelligent dolphins showDiscovery PoolVirtual Reality Voyage(for younger children)crabs,smaller creaturesnoisiest fish,prettiest fish,tiniest fish,(swim with)dolphins,the great white shark.Which part of underwater world would you li

9、ke to visit?Why?Part IIIVoice your opinionSea theatreVoice your opinionI like dolphins very much.I want to see the clever dolphins in performance.Where should I go?Virtual reality voyageI have heard that there are some very special fish in the underwater world.And there is a kind of fish which can u

10、se a light to attract food.Thats funny.I am looking forward to seeing it.Where should I go?Discovery poolI am the best friends of small creatures.Is there a place for me to make friends with small creatures like crabs?I have never been to the pole.I want to see the big iceberg,the acrobatic seals an

11、d the penguin.where should I go?Polar worldOcean floorI am a bird.I can fly high in the sky.And I know that there is a kind of fish that can“fly in the water.I want to have a competition with it.Do you have this fish?Comparison of adjectivesGrammar1.表示AB两方程度相同的用_，如：我的苹果和你的一样红。My apples are as red as

12、 yours.形容词比较等级的句型“as+原级+as”Part IVGrammarnot+so(as)+原级+as2.表示AB两方程度不同，A不如B的，用 _”，如：第一课不如第二课有趣。Lesson One is not so(as)interesting asLesson Two.1)Lucy的连衣裙与Lily的一样漂亮。Lucys dress is _ _ _ Lilys.2)这个会议没上次的重要。This meeting is _ _ _ _ last one.as beautiful asnot so important as【即学即练】比较级+than3.表示AB两方程度不同，A超

13、过B的用“_”如：黑色的猫比白色的那只更饿。The black cat is hungrier than the white cat.1)今天比昨天更干燥。Today is _ _ yesterday.2)太阳比月亮大得多。The sun is _ _ _ the moon.3)他是家里兄弟中最年轻的。He is _ _any other brother in the family.drier thanmuch bigger thanyounger than【即学即练】the+最高级+比较范围4.表示三个或三个以上进行比较，其中某一方超过其他几方面的用“_”,如：她是我们班最好的学生。She

14、is the best student in our class.1)过去她家是村里最穷的。Her family _ _ _in her village in the past.2)澳大利亚是世界上最富裕的国家之一Australia is one of _in the world.3)他是家里兄弟中最年轻的。He is _ _ of the brothers in the family.was the poorestthe richest countries the youngest【即学即练】5.Which/What do you like better,A or B?Which/What

15、do you like best,A,B or C?6.The+比较级+of+the+two 如：李明是这两人中更高的一个。Li Ming is the taller of the two.7.越来越:比较级+and+比较级more and more+原级如：The weather is hotter and hotter.Our country is more and more beautiful.【注 意】1.在“比较级+than”这一句型中，作为比较对象的成分不能省略。如：在冬天北京比广州更冷。In winter its colder in Beijing than in Guangzh

16、ou.(对)In winter its colder in Beijing than Guangzhou.(错)2.形容词比较等级前一般可用much,even,a lot,a little,a bit,等状语修饰。2)月亮比太阳小得多。The moon is _ _ _ the sun.3)这本书比那本书厚一点。The book is _ _ _ than that one.1)Who is _,Mr.Green or Mr.Smith?A.very rich B.much richer C.the richest D.more richerBmuch smaller thana little

17、 thicker【即学即练】3.形容词比较等级前还可以被表示年龄、倍数等词组修饰。如：She is two years older than Mike.This mountain is 3 times higher than that one.1)这个棍子比那根长3米。This stick is _ _ _ than that one.2)Mary 比Jenny重两公斤。Mary is _ _ heavier than Jenny.three meters longertwo kilos【即学即练】Sentences from the text 1.Its three times as big

18、 as underwater2.They are less colorful than other fish but they move beautifully.3.You certainly wont find a noisier fish.4.They have a huge mouth and can eat fish as big as themselves1.“as many/few+可数名词复数+as”或 “as much/little(少的)+不可数名词+as”前者描述数目上的接近,后者描述量的相近.You may borrow as many books as you can.

19、你能借多少书就借多少。“Drink as much water as you can,”the doctor said to him.医生对他说：“你要尽可能的多喝些水。”形容词比较等级的句型还有：2.“主语+比较级+than any other”结构表示：主语所描述的事物比其他任何一个都比较级形式表示最高级含义。Li Ming is much cleverer than any other student in their class.李明是他们班中最聪明的学生。注意：若比较范围不同，than后应用“any+可数名词的复数形式+其他”。China is larger that any cou

20、ntries in Africa.中国比非洲上的任何国家都大。3.比较级的最高级含义原句回放You certainly wont find a noisier fish.要点点拨本句相当于Thats the nosiest fish youcan find.英语中否定词和比较级连用一般表示最高级含义，有强调意味。意为“再没有比更的了”。常见结构1)not/never +a/an+比较级+n.2)no/never/nothing +比较级例如：There is not a taller player than him in his team.他是他们队里最高的。I have done my be

21、st;I cant make anything more beautiful out of it.我已经尽力把它弄得最漂亮了。4.“形容词+to”结构也可表示比较含义。This kind of car is superior in quality to that.这种汽车的质量比那一种好得多(superior to意为：优于；胜过)Li ping is three years senior to Liu Gang.李平比刘刚大三岁。(senior to意为：年长于；资格老于；地位高于)5.“no+比较级+than”结构表示对两个比较对象都进行否定(可由neithernor结构来改写)。Im n

22、o more foolish than you.我们俩都不傻。(相当于Neither I nor you is foolish.)6.“not more+比较级+than”结构表示在程度上“前者不如后者”This book is not more interesting than that one.这本书不如那本书有趣。(相当于:The book is less interesting than that one.)7.“形容词比较级+than+形容词”,意为“与其倒不如.”Jack is much harder than clever.与其说杰克聪明，倒不如说他学习用功。8.would ra

23、therthan,preferto,prefer to dorather than这三个句型表示“宁愿而不愿;喜欢胜过宁做而不愿做”含义。虽无比较级形式，但表示比较级含义。She would rather die than give in.她宁死不屈。He preferred to go out rather than stay home.他宁愿出去也不愿呆在家里。9.该结构意为“越，越”。The+比较级，the+比较级 The more difficult the questions are,the less likely he is able to answer them.问题越难，他回答

24、出来的可能性就越小.10.what有时也可以表示“比较”关系，说明两种事物的相同或相似性。what的该种用法常用于书面语，用来加强修辞效果，含有比喻含义，相当于as，意为“好比；正如；就像一样”。what的该类用法共有3种情况：(1)A is to B what C is to DTwelve is two what twenty-four is to four.十二比二就等于二十四比四。(2)what C is to D,A is to BWhat food is to the body,a book is to the mind.书籍对于思想犹如食物对于身体。(3)what C is to

25、 D,that A is to BWhat the gun is to a soldier,that the pen is to a writer.作家的笔犹如战士的枪。11.倍数的表示方法原句回放You can only see a small part of it above the water.Its three times as bigunderwater.要点点拨“Its three times as big underwater.”是一个省略句，补全就是：Its three times as big underwater as the part above the water.常见

26、的表达法：1)倍数+形容词比较级+than+比较对象；2)倍数+as+形容词+as+比较对象；3)形容词比较级+than+比较对象+by+倍数。如：This cake is twice bigger than that one.=This cake is twice as big as that one.=This cake is bigger than that one bytwice.1.Bob never does his homework_2.Mary.He makes lots of mistakes.A.so careful as B.as carefully as C.caref

27、ully as D.as careful as 2.Now air in our town is _ than it used to be.Something must be done to it 1.A.very good B.much better 2.C.rather than D.even worseBD3.-Is your headache getting _?-No,its worse.A.better B.bad C.less D.well4.Americans eat _ vegetables per person today as they did in 1910.A.mor

28、e than twice B.as twice as many C.twice as many as D.more than twice as many AD5.In recent years travel companies have succeeded in selling us the idea that the further we go,_.A.our holiday will be better B.our holiday will be the better C.the better our holiday will be D.the better will our holida

29、y be6.Greenland,_ island in the world,covers over two million square kilometers.A.it is the largest B.that is the largest C.is the largest D.the largestDC7.I feel _ better than yesterday.A.more B.very C.the D.far8.China has a large population than _ in the world.1.A.all the countries B.every country

30、 2.C.any country D.any other countryDD9.Did you enjoy yourself at the party?Yes,Ive never been to _ one before.1.A.a more excited B.the most excited2.C.a more exciting D.the most exciting3.10.I like this jacket better than that one,but it costs almost three times _.4.A.as much B.as many 5.C.so much

31、D.so manyCA11.As far as I am concerned,education is about learning and the more you learn,_.A.the more for life are you equipped B.the more equipped for life you are C.the more life you are equipped for D.you are equipped the more for life12.Is your headache getting _?No,its worse.A.better B.bad C.l

32、ess D.wellBA13.Four of Roberts children were at the party,including _,Luke.A.the oldest B.an oldest one C.the old D.an old one14.At a rough estimate,Nigeria is _ Great Britain.A.three times the size as B.the size three times of C.three times as the size of D.three times the size ofAD15.This restaura

33、nt wasnt _ that other restaurant we went to.A.half as good as B.as half good as C.as good as half D.good as half asA1.Complete Exercises 6-9 on Page 13.2.Oral WorkPrepare to act as a tour guide.You will introduce the underwater world as much as possible and try your best to persuade visitors to visit the underwater world.Homework