八年级英语上册Unit3ComputersGrammar新版牛津深圳版.pptx

Period 3Period 3 Grammar Grammar Grammar GrammarModule 2 Science and technologyOxford EnglishUnit 3ComputersWill computers make our lives better?Revision and introductionRevision and introduction1 Complete the article.The first computers were _ than cars,but now they are becoming _ and _.Computers can calculate at a _ speed than we can.Computers are not _ than human beings,but they may be able to do a _ job than us.In the past,computers were _ expensive,but now they are much _.cheapercheaperclevererclevererfasterfastersmallersmallerbiggerbiggermoremore Grammar A The comparative Grammar A The comparative of adjectivesof adjectives2When we compare two people or things,we can use the comparative of adjectives.betterbetterbetterbetterHow do we form the comparative of adjectives?-er-ermoremorethanthanThe first computers were _ than cars,but now they are becoming _ and _.Computers can calculate at a _ speed than we can.Computers are not _ than human beings,but they may be able to do a _ job than us.In the past,computers were _ expensive,but now they are much _.cheapercheaperclevererclevererfasterfastersmallersmallerbiggerbiggermoremorebetterbetterbetterbetterThe small dog runs fast.The horse runs _ than the small dog.fastfasterfastest The leopard runs _.fasterthe fastestThe cow is _ than the sheep.The elephant is _ of all.heavyheavierheaviest The sheep is heavy.heavierthe heaviestJim is strong.Li Lei is .Tom is .strongerthe strongestThe blue car is nice.The red car is the blue car.(红车比蓝车好看）红车比蓝车好看）The colourful car is of all.（彩色车最好看）（彩色车最好看）nicer thanthe nicestHow do you like these Christmas trees?1 2 3The first Christmas tree is beautiful.The second one is _than the first one.The third one is _of the three.more beautifulthe most beautiful￥500.00￥1000.00￥1500.00The green bag is expensive.The white one is _ _ than the green one.The purple bag is _one of all the bags.more expensivethe most expensive形容词和副词比较级和最高级的形容词和副词比较级和最高级的规则变化规则变化：形容词或副词形容词或副词原级原级比较级比较级the+最高级最高级 tall taller the tallest nice nicer the nicest early earlier the earliest 规则变化规则变化一般在词尾一般在词尾加加-er 或或-estshorterthe shortest以字母以字母e结尾的结尾的单词后加单词后加-r 或或-stfinerthe finestheavierthe heaviest以以“辅音字母辅音字母+y”变变y为为i,再加再加-er或或-estshortfineheavybiggerbigthinhotthe thinnestthinnerthe biggesthotterthe hottest以辅以辅+元元+辅结辅结尾的，尾的，双写尾双写尾字母字母，再加，再加-er/-est长的形容词长的形容词 多音节或少数多音节或少数双音节形容词，双音节形容词，在词前在词前more/mostexpensivebeautifulusefulthe mostexpensivethe mostbeautifulthe most usefulmoreexpensivemorebeautifulmore useful 1.large _ _ 2.nice _ _ 3.dry _ _ 4.thin _ _5.clever_ _ 6.happy_ _ 7.heavy_ _ 8.fat _ _9.politely_ _10.early _ _ 11.beautiful _ _12.quickly _ _ 13.interesting_ _14.excited _ _larger the largest nicer the nicestdrier the driestthinner the thinnestcleverer the cleveresthappier the happiestheavier the heaviestfatter the fattestmore the most more beautiful the most beautiful写出比较级和最高级写出比较级和最高级more quickly the most quicklymore interesting the most interestingmore excited the most excitedearlier the earilest1.这个箱子比那个箱子重。这个箱子比那个箱子重。This box is _ that one.2.你的电脑比我的大。你的电脑比我的大。Your computer is _mine.heavier thanbigger than3.长江比黄河长。长江比黄河长。The Yangtze River is _ _ the Yellow River.longer than4.这个故事没有那个有趣。这个故事没有那个有趣。This story is _ _ _ that one.less interesting thanFill the blanks.A +谓语谓语+比较级比较级+than+BConclusion：比较级的句子结构：比较级的句子结构：Oral Translation1你认为英语比数学简单吗你认为英语比数学简单吗?Do you think English is easier than math?2 这个相机比那个相机贵。这个相机比那个相机贵。This camera is more expensive than that one.3 玛丽比吉姆学习努力。玛丽比吉姆学习努力。Mary studies harder than Jim.4 我比我姐姐跳得远。我比我姐姐跳得远。I jumped farther than my sister A +谓语谓语+比较级比较级+than+BLets play a game:开火车开火车 You must compare yourself with someone in our class.(e.g age,height,weight,hair length)or other things(e.g book,watch,pen,school bag)如果你们组有任何人掉链，都会被扣掉一如果你们组有任何人掉链，都会被扣掉一个个A。整组都接上，将会得到。整组都接上，将会得到4A.eg:Im fatter than moremore expensiveexpensivelighterlighterComplete the conversation below and on page 40 with the comparative of the adjectives from the box.heavierheaviersmallersmallerbiggerbigger S1:_,Canada or China?(country/big)S2:_.Ask and answer questions using the following information.The first one has been done for you.(country/big)CanadaCanadaChinaChinaHong KongShanghaithe Yellow Riverthe Yangtze RiverHainan IslandTaiwan IslandMountain TaiYellow Mountain(city/big)(river/long)(island/large)(mountain/high)S1:_,Cananda or China?(country/big)S2:_.Ask and answer questions using the following information.The first one has been done for you.The red laptop is the smallest among/of the three.When we compare more than two people or things,we use the superlative of adjectives.Grammar B The Grammar B The superlative of adjectivessuperlative of adjectives3￥6,000￥4,600￥7,500The red laptop is the smallest among/of the three,but it is _.the most expensive the most expensive How do we form the superlative of adjectives?-estestmostmostthetheThe dog is _ _the mouse.The horse is _ _ _ all.The boy is _ _the man.The baby is _ _ the three.bigbiggerbiggestyoung youngeryoungestbigger thanthe biggest ofyounger thanthe youngest ofJimLi LeiTomLi Lei is _ _Tom.Jim is _ _ _our class.￥30￥20￥10The yellow coat is _ _the purple one.The brown coat is _ _ _ the three.taller thanthe tallest in cheaper thanthe cheapest ofThe horse is the biggest of all.The baby is the youngest of the three.The brown coat is the cheapest of the three.Jim is the tallest in our class.主语主语 +be +the +最高级最高级+of/in形容词最高级句式的结构：形容词最高级句式的结构：注意：注意：形容词最高级前一定要用形容词最高级前一定要用the.the.最高级后面可用最高级后面可用in,ofin,of等短语来说明比较围。等短语来说明比较围。the superlative of adjectives最高级形式最高级形式例词例词单音节单音节形容词形容词大大多多数数单单音音节节形形容词容词+-esthigh highest small smallest以以-e结尾结尾+-stlarge largest wide widest一一个个元元音音+一一个辅音个辅音双双写写辅辅音音字字母母，再再加加-estbig biggest hot hottest双音节双音节形容词形容词以以-y或或-ly结尾结尾去掉去掉y，再加，再加-iesthappy happiest silly silliest以以非非重重读读元元音音、/l/或或/R(r)/结结尾尾+-est(-st)clever cleverest simple simplest以以-ful，-less，-ed，-ing结尾结尾most+形容词原级形容词原级careful most careful boring most boring多多音音节节形容词形容词含含三三个个或或三三个个以以上音节上音节most+形容词原级形容词原级difficult most difficultpopular most popularThe dog is _ _the mouse.The horse is _ _ _ all.The boy is _ _the man.The baby is _ _ the three.bigbiggerbiggestyoung youngeryoungestbigger thanthe biggest ofyounger thanthe youngest ofJimLi LeiTomLi Lei is _ _Tom.Jim is _ _ _our class.￥30￥20￥10The yellow coat is _ _the purple one.The brown coat is _ _ _ the three.taller thanthe tallest in cheaper thanthe cheapest ofDavid:Id like to see some of your cameras.Salesman:Certainly.This is the most expensive model.This is the cheapest model.This is the newest and lightest model.a ab bc cB1 David is shopping for a camera.Look at the photos and write the letter of the correct model after each statement.(1)_(2)_(3)_Tony:Did they show you any cameras?David:Yes.The(1)_model is (2)_.The(3)_model costs(4)_.The(5)_model was made in(6)_.The(7)_model weighs(8)_.expensive light old smallsmallestsmallest99.8 mm 99.8 mm x 56.4 mm x 24.5 mmx 56.4 mm x 24.5 mmmost expensivemost expensiveoldestoldestlightestlightest3,5893,58920102010170 g170 gB2 David told his friend Tony about his shopping trip.Complete Davids sentences with the superlative of the adjectives from the box.S1:Which is the biggest,the Earth,the Moon or the Sun?S2:The Sun is the biggest.the Earth,the Moon or the Sun?(big)a bee,a butterfly or an ant?(small)iron,silver or gold?(valuable)a bear,a whale or an elephant?(heavy)a spaceship,a plane or a train?(fast)Ask and answer questions using the following information.The first one has been done for you.More practise1.My sister is _ than Richard.(old)2.Is football _ than volleyball?(exciting)3.I think she looks _ than in the photo.(pretty)4.Can you walk _ than a young man?(far)5.In summer it is much _ in Wuhan than in Beijing.(hot)6.Tom is _ boy in our class.(old)oldermore excitingprettierfartherhotterthe oldest7.It was the _ day of his life.(bad)8.Which is _,Room 201 or Room 108?(bright)9.We watched a very _ play the day before yesterday.(bore)10.Sue is _ of the girls in the class.(clever)She answered all the questions except _ one.(difficult)11.Winter is _ than autumn;it is _ of the four seasons.(cold)worst the cleverestthe most difficultcolder the coldestbrighter boringMikes family pictureMikes father is the fattest in the family.Mikes mother is the most careful.And Mike is the most interesting of all.模仿上文，写一篇短文描述你的家庭成员。尽模仿上文，写一篇短文描述你的家庭成员。尽可能多用不同的形容词最高级可能多用不同的形容词最高级(old,tall,fat,thin,strong,careful,careless,hardworking,funny)课后练习1.D2.A3.B4.B5.C6.C7.D8.B9.D10.B11.B12.C13.B14.A15.A16.B17.C18.B19.C20.C填空1.easier2.cleaner3.larger4.the oldest5.more useful6.best7.the most interested8.more different9.the greatest10.more beautiful