八年級英語下冊 Unit 7 What’s the highest mountain in the world課件2 （新版）人教新目標(biāo)版.ppt

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sectionAgrammar,八下英語Unit7What’sthehighestmountainintheworld?,GrammarFocus,4a.Fillintheblankswiththecorrectformsofthewordsinthebox.,1.TheAmazonRiverisoneofthe_________riversintheworld.It’salittle________thantheYangtzeRiver.2.Qomolangmais8,844.43meters_______.,bigmuchpopularlongoldhigh,longest,longer,high,It’soneofthemost__________placesforseriousmountainclimbers.3.Nooceanintheworldisas________asthePacificOcean.4.AlthoughJapanis__________thanCanada,itis_________smaller.,popular,big,older,much,e.g.Tworivers：_________________and________________________________________________________________________________________________________________________________________________,4b.Writetwocomparisonsabouttwotopics.Writetruefacts.,theYangtzeRiver,theAmazonRiver,TheYangtzeRiverisalmostaslongastheAmazonRiver.,TheAmazonislongerthantheYangtze,buttheYangtzeisthelongestriverinChina.,Twocities：__________and__________1.______________________________________2.___________________________________________________________________________,Twoanimals：__________and__________1.______________________________________2.___________________________________________________________________________,Pairwork,4c.Writefivequestionsusingcomparisons.Thenaskyourpartneryourquestions.,____________________________________________________________________________________________________________________________________________________________________________________,Whatisthehighestbuildinginourcity?,Whoistheoldestpeopleinourcity?,Whatisthemostpopularstreetinourcity?,Whatisthemostdeliciousfoodinourcity?,Whereisthebusiestroadinourcity?,GrammarFocus,(一)數(shù)詞Numeral,數(shù)詞是用來表示事物的數(shù)目和順序的詞。,數(shù)詞的分類：1.基數(shù)詞2.序數(shù)詞3.分?jǐn)?shù)詞今天我們先來學(xué)習(xí)一下基數(shù)詞。,1.復(fù)習(xí)1—100以內(nèi)的所有數(shù)字。2.掌握百、千、萬、十萬、百萬的表達(dá)法。,1、1-19的基數(shù)詞,one1two2three3four4five5,six6seven7eight8nine9ten10,eleven11twelve12thirteen13fourteen14,fifteen15sixteen16seventeen17eighteen18nineteen19,2、20—90等十位數(shù),twenty20thirty30forty40fifty50sixty60seventy70eighty80ninety90,twenty-one21twenty-two22………………其它的十位數(shù)照此類推，如：thirty-one31forty-two42seventy-five75ninety-six96,3、百、千、萬,百hundred100onehundred200twohundred以此類推千thousand1000onethousand2000twothousand英語里沒有“萬”這一單位，萬也用thousand表示。如：10000tenthousand一萬20000twentythousand兩萬,4、十萬、百萬,十萬的說法是：100.000a(one)hundredthousand200.000twohundredthousandmillion百萬a(one)million1,000,000twomillion2,000,000以此類推8,000,000eightmillion,練一練345100118,657,421,threehundredandforty-five,onethousand(and)one,eighteenmillion,sixhundredandfifty-seventhousand,fourhundredandtwenty-one,Theprojectlasted5yearsandcost2billiondollars.2.TheChinesehavebeenmakingpaperfortwothousandyears.3.Onethousandpoundsisalotofmoney.,表示確定數(shù)量時用基數(shù)詞+hundred，thousand，million，billion,多位基數(shù)詞讀法,457,890,608,389,threehundredandeighty-nine,fourhundredandfifty-seven,eighthundredandninety,sixhundredandeight,1）101~999的三位數(shù)由“百位數(shù)＋and+兩位數(shù)組成”。如：325—threehundredandtwenty-five,102onehundredandtwo,635sixhundredandthirty-five,2)三位數(shù)以上的數(shù)，從個位往前數(shù)，每三位數(shù)加一個逗號，從后往前數(shù)的第一個逗號代表thousand,第二個逗號代表million,第三個逗號是billion，注意這幾個詞不能用復(fù)數(shù)形式，后也不能加and。例如：2,648twothousand,sixhundredandforty-eight16,250,064sixteenmillion,twohundredandfiftythousand,sixty-four,確切數(shù)目與不確切數(shù)目的表達(dá)：hundred,thousand,million,billion等前面有基數(shù)詞，表示確切數(shù)目時，用單數(shù)，后直接接復(fù)數(shù)名詞；如：threehundredbooksonehundredpeoplefivethousandstudentssevenmillionstarts,表示不確切數(shù)目時，這類詞后加-s且與of連用。如：hundredsofpeoplethousandsofstudentsmillionsofbirdsbillionsoflions注意：這類短語中，名詞前如有定冠詞、指示代詞或形容詞性物主代詞時，可加of,但表示的是范圍。如：twohundredoftheworkers工人中的二百（人）,GrammarFocus,(二)形容詞的比較級和最高級comparativesandsuperlativeswithadj.andadv.,short,-,shorter,small,-,smaller,nice,nicer,safe,safer,-,-,-,-,-,-,big,thin,heavy,heavier,happy,happier,,,,找規(guī)律：,big,bigger,thin,thinner,,delicious–moredeliciousinteresting–moreinterestingimportant—moreimportantcarefully---morecarefullyquickly---morequicklyslowly---moreslowlyeasily---moreeasily,找規(guī)律：,大多數(shù)形容詞和副詞有三個等級：原級、比較級、最高級。一、形容詞比較級的構(gòu)成1.構(gòu)成的不規(guī)則變化:2.構(gòu)成的規(guī)則變化:,形容詞和副詞的比較級,1.構(gòu)成的不規(guī)則變化:e.g.good/well–better–bestbad/badly–worse–worstmany/much–more–mostlittle–less–leastfar–farther/further–farthest/furthest,2.構(gòu)成的規(guī)則變化:1)單音節(jié)詞和少數(shù)雙音節(jié)詞一般在詞尾后加-er構(gòu)成比較級或-est構(gòu)成最高級.如：原級比較級最高級cold–——colder–——coldestbright———brighter———brightestyoung——younger——youngest,2)以字母e結(jié)尾的詞只加–r或-st構(gòu)成比較級和最高級。原級比較級最高級nice———nicer–———nicestfine———finer————finestlarge——larger————largest,3)重讀閉音節(jié)詞末尾只有一個輔音字母時,先雙寫這個輔音字母,再加-er或-est。如:big–bigger–biggestthin–thinner–thinnest4)以“輔音字母+y”結(jié)尾的雙音節(jié)詞，先改y為i,再加-er或-est。如：easy–easier–easiesthappy–happier–happiest,5)多音節(jié)詞和部分雙音節(jié)詞在詞前加more或most。如：delicious–moredelicious–mostdeliciousinteresting–moreinteresting–mostinterestingimportant—moreimportant—mostimportant,carefully---morecarefully--mostcarefullyquickly---morequickly---mostquicklyslowly---moreslowly---mostslowlyeasily---moreeasily---mosteasily,形容詞最高級的構(gòu)成,tall,taller,tallest,B:heavyeasytidydrybusyhappyhealthyhungryearly,,y--i--est,C:largelatenice,,--st,biggest,D:big,hot,hottest,thin“雙寫”,thinnest,wet,wettest,fat,fattest,,,Adjective,deliciousdangerousinterestingpopularbeautifulcarefulfriendly,,themost--adj.,Adjective,betterbest,,far,little,worseworst,moremost,fartherfarthest,lessleast,good,well,bad,badly,many,much,,,fortable3.big4.happy5.cheap6.many7.difficult8.little,betterbestmorecomfortablemostcomfortablebiggerbiggesthappierhappiestcheapercheapestmoremostmoredifficultmostdifficultlessleast,用法：英語中三者或三者以上相比較，表示“最……”這樣的最高程度概念時，要用“the+最高級”的結(jié)構(gòu)表示。這種句式一般帶有表示比較的介詞短語，比如:inourclass,ofthethree等。例如：WangLinisthetallestinourclass.Thistheateristhecheapestofthethree.注意使用最高級時應(yīng)注意以下幾點：,形容詞的最高級,(1)表示“最……之一”的句式，要用oneofthe+形容詞最高級+復(fù)數(shù)名詞。例如:JingjiangHotelisoneofthebiggesthotelsinourcity.Lisaisnotoneofmybestfriends.(2)當(dāng)最高級前面有物主代詞或名詞所有格時，不加定冠詞the。例如：TomisLucy’sbestfriend.Tuesdayisherbusiestday.,(3)最高級前可加序數(shù)詞。例如：TheYellowRiveristhesecondlongestriverinChina.(4)形容最高級修飾作表語或介詞賓語的名詞，代詞時，被修飾的詞往往省略。例如：Heisthelaziest(student)inourclass.,,2.形容詞比較級和最高級的構(gòu)成規(guī)則變化一般情況下，單音節(jié)或雙音節(jié)的形容詞比較級直接加-er,最高級直接加-est。如：clever—cleverer—cleverestcheap—cheaper—cheapestfew—fewer—fewestsmall—smaller—smallestyoung—younger—youngest,b.以-e結(jié)尾的形容詞，比較級+-r,最高級+-st。如：large—larger—largestnice—nicer—nicestcute—cuter—cutestc.以輔音字母+y結(jié)尾的形容詞，變y為i+er或+est。busy—busier—busiestheavy—heavier—heaviesteasy—easier—easiesthappy—happier—happiestdirty—dirtier—dirtiest,d.以重讀閉音節(jié)結(jié)尾，末尾只有一個輔音字母結(jié)尾的詞，雙寫最后一個輔音字母，再加+er或+est。如：big—bigger—biggestthin—thinner—thinnestfat—fatter—fattesthot—hotter—hotteste.多音節(jié)和部分雙音節(jié)形容詞，需在原級前+more構(gòu)成比較級，+most構(gòu)成最高級。如：important—moreimportant—mostimportantbeautiful—morebeautiful–mostbeautifuldifficult—moredifficult—mostdifficult,3.不規(guī)則變化：,最高級規(guī)則變化口訣：,最高級，很容易，一般詞尾加est。(cheap-thecheapest)詞尾若有啞音e,直接就加st。(close-theclosest)重讀閉音節(jié),單輔音字母要雙寫。(big-thebiggest)輔音字母加y,記得把y變?yōu)閕。(friendly-thefriendliest)多音節(jié)，考考你，themost到底加哪里？(popular-themostpopular),1.WearegoingtotheGreenRestaurantforlunch.(就劃線部分提問)____________yougoingforlunch?2.Samistheshortestinhisclass.(改為同義句)Samis________than_________studentinhisclass.Samis_______than__________studentsinhisclass.Samis_______than______________inhisclass.3.HowdoyoulikeScreenCity?(改為同義句)_______doyou__________ScreenCity?,Whereare,shorter,anyother,What,thinkof,shorter,theother,anyoneelse,shorter,練習(xí)：改寫句子,TheComparativeSuperlativeDegreesofAdjectives&Adverbs,總結(jié),形容詞和副詞比較級和最高級,latelater-latest,earlyearlier–earliest,bigbigger-biggest,fluently/difficultmore～,most～,,重讀閉音節(jié)、末尾只有一個輔音字母雙寫加–er或–est,單音節(jié)詞在詞尾比較級加-er或最高級加-est,以e結(jié)尾的詞，只需加－r或－st,以輔音字母加y結(jié)尾雙音節(jié)詞變y為i加–er或–est,部分雙音節(jié)和多音節(jié)詞在原級前加more或most,少數(shù)以er,ow結(jié)尾的雙音節(jié)詞加-er-est,talltaller-tallest,clevercleverer-cleverest,cheap,cold,small,warm,young,high,fine,nice,safe,happy,busy,dirty,easy,lazy,pretty,fat,hot,red,thin,wet,sad,narrow,yellow,quickly,slowly,useful,careful,popular,modern,,,形容詞和副詞比較級和最高級構(gòu)成(規(guī)則變化),,,,,不規(guī)則變化,good/well–better-best,much/many–more-mostbad/badly/ill–worse–worstlittle–less–leastfar–farther/further–farthest–furthestold–older/elder–oldest/eldest,形容詞和副詞比較級的用法,1.Whorunsfaster,heorshe?,2.Herunsfasterthanshe.,3.Herunsmuchfasterthanshe.,4.Hebecomeshealthierandhealthier.,5.Themoreyouexercise,thehealthieryouwillbe.,6.Sheislesshealthythanhe.,1.表示兩者之間的選擇,可用“Which/Who…+比較，…or…?”.,2.表示兩者之間的比較，通常用連詞than引導(dǎo)，表示“更一些”．,3.much/far/alot,even,still,alittle/abit…修飾比較級,表示程度.,Whorunsfaster,heorshe?,Herunsfasterthanshe.,Herunsmuchfasterthanshe.,4.“比較級+and+比較級”表示“越來越……”,5.“the+比較級,the+比較級”表示“越…,越…”,6.表示不及另一方時，用“l(fā)ess+原級+than…”(雙音節(jié)和多音節(jié)詞),Hebecomeshealthierandhealthier.,Themoreyouexercise,thehealthieryouwillbe.,Sheislesshealthythanhe.,,Heishealthierthanshe.,,Shanghaiisbecomingmoreandmoremodern.,1.比較級+and+比較級越來越…2.the+比較級,the+比較級越…,越…,3._______________youare,_________mistakesyouwillmake.(你越仔細(xì)，做錯的題目就越少）4.__________youeat,_________you’llbe.(你吃得越多,就越胖)5.Alicewriteswell.Marywrites_________________thanshe.(甚至更好）,,Themorecareful,thefewer,Themore,thefatter,1.Thegirlbecomes______________________.(越來越漂亮）,moreandmorebeautiful,2.Theweatherisgetting_________________.(越來越槽糕）,worseandworse,even/stillbetter,1.表示三者或三者以上比較,可用”Which/Who…+最高級,…,…or…?”表示.,2.最高級+of/among(同類比較)in…(范圍比較),4.oneof+,形容詞最高級,+名詞復(fù)數(shù)表示“最…之一”,3.序數(shù)詞修飾最高級,形容詞和副詞的最高級的用法,Whoisthetallest,Tom,Mike,orJack?,Tomisthetallestofthethree.,Mikeisthesecondtalleststudentinourclass.,Jackisoneofthetalleststudentsinourclass.,Tomruns(the)fastestinourclass.,,3.LinTaois__________________________intheclassbecausehenevergetstoschoolontime.（最懶的學(xué)生之一）4.Edisonwas_________________________intheworld.(最偉大的發(fā)明家之一）,oneofthelazieststudents,oneofthegreatestinventors,,TheYangtzeRiveris__________________riverintheworld.(第三長河）,thethirdlongest,2.TheAtlanticis__________________oceanintheworld.(第二大洋）,thesecondbiggest,Exercise:,一、翻譯句子：,二、同義句轉(zhuǎn)換,1.FlatAismoreexpensivethanFlatBFlatBis_______________thanFlatA.FlatBis_______________FlatA.FlatBisnot_________________FlatA.,,2.IprefermathstoEnglish.Ilikemaths__________________English.,betterthan,3.Heisthetalleststudentintheclass.Heis______________________________intheclass.,tallerthananyotherstudent,,,,anyother+名詞單數(shù),,,,less,expensive,cheaper,than,as,expensive,as,,1.HainanisaverylargeIsland.Itisthesecond_________islandinchina.(large)2.Ourteacherisas______asbefore.(busy).3.Heis______________amongus.(careful)4.LiLeijumpedfar______thanJim.(far)5.Thebusierheis,the________hefeels.(happy)6.IthinkYaoMingisoneof____________basketballplayersinNBA.(hot),busy,themostcareful,farther,happier,largest,thehottest,三、完成句子,Homework,Practicewithyourclassmatestospeakandwritelargenumbers.Writesomenumbercarsandputtheminyourroom.Wheneveryousee,readthemquickly.,ThankYou!,