Unit7SectionAGrammarB1a-1d課件人教版八年級英語下冊

What’sthehighestmountainintheworld?SectionAGrammar-B(1a-1d)ObserveandlearnCONTENTS01形容詞和副詞的比較級、最高級用法0203倍數(shù)的表達法度量的表達1度量的表達2mtallwide50mThetreeis_____________________.Theriveris_____________________.2meterstall50meterswide1.觀察并總結：8,844.43metershigh，1,025metersdeep，6,671kilometerslong，2meterstall,50meterswide

+

+

(long,high,wide,deep…)構成的2.練一練：（1）2500米深

，（2）35千米寬

.基數(shù)詞量詞長/高/寬/深2500metersdeep35kilometerswideNowlet’strytotranslatethesentencesbelow:那個籃球運動員有兩米高。那條河只有兩米深/寬。這棵樹有兩米高。那條河長約兩千米。Thebasketballplayeristwometerstall.Theriverisonlytwometersdeep/wide.Thetreeistwometerstall.Thatriverisabouttwokilometerslong.2形容詞和副詞的比較級、最高級latelater-latestearly

earlier–earliestbigbigger-biggestfluently/difficultmore～,most～重讀閉音節(jié)、末尾只有一個輔音字母雙寫加–er或–est一般在詞尾加-er或最高級加-est以e結尾的詞，只需加－r或－st以輔音字母加y結尾雙音節(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mosttalltaller-tallestcheap,cold,small,warm,young,highfine,nice,safehappy,busy,dirty,easy,lazy,prettyfat,hot,red,thin,wet,

sad

quickly,slowly,useful,careful,popular,modern,形容詞和副詞比較級和最高級構成

(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–furthest

old–older/elder–oldest/eldest形容詞和副詞原級的用法肯定句：A…+as+原級+as+B否定句：A…+notso/as+原級+as+B1.她和我一樣聰明。2.Tom和Jim跑得一樣快。3.這本書沒有那本書有趣。Sheisassmartasme.TomrunsasfastasJim.Thisbookisn’tas/sointerestingasthatone.形容詞和副詞的比較級用法A…+比較級+than+BTina比我高。2.Which/Who…+比較級，AorB?

誰比較高，Tom還是Jim?3.比較級+比較級“越來越...”天氣變得越來越熱。4.the+比較級；the+比較級“越...就越...”你越努力，你的成績就越好。Tinaistallerthanme.Whoistaller，TomorJim?Theweatherisgettinghotterandhotter.Theharderyouwork,thebettergradesyouwillget.比較級前常用的修飾語有

far，even，alot，abit，much等。Which/Who…+最高級,A,BorC?Tom,Mike,orJack,誰最高？2.最高級+of/in短語表比較范圍

Tom是我們班跑的最快的。4.oneof+最高級+名詞復數(shù)，表示“最…之一”3.最高級前面加序數(shù)詞，表示“第幾最…”形容詞和副詞的最高級的用法黃河是中國第二長河。Tina是最受歡迎的學生之一Tomrunsthefastestinourclass.TheYellowRiveristhesecondlongestriverinChina.Tinaisoneofthemostpopularstudents.5.最高級前面可以用物主代詞、指示代詞、名詞所有格修飾。此時不能加“the”。這是我們最好的一節(jié)課。6.比較級可以表示最高級含義。LiLei是他們班上最高的學生。LiLeiisthetalleststudentinhisclass.==Thisisourbestclass.LiLeiistallerthananyotherstudentinhisclass.LiLeiistallerthantheotherstudentsinhisclass..Fillintheblankswiththecorrectformsofthewordsinthebox.bigmuchpopularlongoldhighTheAmazonRiverisoneofthe_______riversintheworld.It’salittle_______ thantheYangtzeRiver.2.Qomolangmais8,844.43meters_____. It’soneofthemost________placesforseriousmountainclimbers.longestlongerhighpopular4aoneofthe+adj.最高級+n.復數(shù)（最……的之一）3.Nooceanintheworldisas_____as thePacificOcean.4.AlthoughJapanis_______than Canada,itis_______smaller.bigoldermuchas+adj原級

+as（和……一樣）much+

adj.比較級（……的多）3倍數(shù)的表達法eats150kilosoffoodadayeat10kilosoffoodaday大象吃的是熊貓吃的15倍。大象吃的比熊貓吃的多14倍。Theelephanteats______________________thepanda.Theelephanteats______________________thepanda.15timesasmuchas14timesmorethan倍數(shù)+形容詞/副詞比較級+than…倍數(shù)+as+形容詞/副詞原級+as…Tom跑得比Amy快(三倍)。1)TomrunsthreetimesfasterthanAmy.2)TomrunsfourtimesasfastasAmy.A:Thiselephantis200cmtallerthan

thispanda.B:Thispandais200cmshorterthan

thiselephant.pairwork(200cmtaller/shorter,weighmuchmore/less,eatmuchmore/lesseatmanytimesmore)A:Thiselephant

weighsmanytimesmorethan

thispanda.B:Thispanda…Comparefactsaboutthesetwoanimals.Usethelanguageintheboxtohelpyoumakesentences.Let’sknowmoreaboutpandas.Listenandcheck(√)thenumbersyouhear.Listening1001620501200.10.2150√√√√√1bListenagainandcompletethesentences.1.Atbirth,ababypandaisabout___to___kilos.

2.Atbirth,ababypandaisabout___

cmlong.

3.Ababypandaisnotblack.Itis____andithasno_____.4.Apandacanliveupto___to___years.0.10.215pinkteeth20301cPractice

1.Mybrotherhas____booksthanI.A.muchB.moreC.manyD.most2.Themoreyousmile,the_____youwillfeel.A.happyB.happierC.happilyD.morehappily3.Sheis___carefulasI,butI’m____thanyou.A.as…muchcarefulB.so…morecarefulC.as…muchmorecarefulD.so…verycareful4.MrSmiththoughttheCenturyParkwasthesecond_____inShanghai.A.largeB.largerC.largestD.verylarge5.

Wecanjump___onthemoonthanontheearth.

A.morehigh

B.much

C.high

D.muchhigher

6.

The___heis,the