廣東省深圳市松泉中學八年級英語上冊Module2ScienceandtechnologyUnit3ComputersGrammar課件新版牛津深圳版

Unit3Computers

GrammarThecomparativeofadjective

形容詞比較級Formthecomparativeofadjective比較級的形式adj.Comparativeofadj.cheapcheapertalltallerinterestingmoreinterestingexpensivemoreexpensiveMybrotheristallerthanme.Thisoneischeaperthanthatone.Thisfilmismoreinterestingthanthatone.WorkouttheruleToformthecomparativeofadjectives,weoftenadd______toshortadjectivesanduse________withlongadjectivesWeoftenuse________afterthecomparativeofadjectives.ermorethanCompletetheconversationbelowandonpage40withthecomparativeofadjectives.Salesman:CanIhelpyou,sir?David:Yes,Ineedasuitcase.Canyoutellmeaboutthesetwo?Salesman:Sure.Theredonecosts￥2,500,andit’smadeofleather.David:Isee.Theredoneis______________thantheblackone.Whataboutthe

weight?

Whichoneis____________?moreexpensiveheavierSalesman:Theblackone.Itismadeofplastic(塑料）.Trythem,sir.David:Youareright.Theredoneis_______________thantheblackone,andit’s_________thantheblackone.Salesman:Doyouhavealotofthingstocarry?David:Yes,Ido.Iwillhavetheblackonebecauseit’s________thantheredone.Salesman:Thankyouverymuch,sir.moreexpensivelighterbigger形容詞比較級的變化的規(guī)則：

（一）單音節(jié)詞，雙音節(jié)詞的比較級

⑴一般在詞尾加er

；

⑵以字母e結尾，加r；

⑶以一個元音字母和一個輔音字母結尾，應雙寫末尾的輔音字母，再加er

；⑷以“輔音字母+y”結尾，先把y變i，再加er

。（5）以ly結尾構成形容詞詞綴如：friendlymorefriendly（6）分詞形容詞前加more如：boringinterestingboredinterested（7）以形容詞后綴結尾的形容詞前加morecarfulmorecareful（8）特殊變化well/goodbettermany/muchmore

（二）多音節(jié)詞的比較級前加more

morecarefulmorebeautiful

寫出下列形容詞或副詞的比較級

old__________

young________

tall_______

long________

short________

strong________

big________

small_______

fat_________

thin__________

heavy______

light________

olderyoungertallerlongershorterstrongerbiggersmallerfatterthinnerheavierlighter

nice_________

good_________

beautiful__________________

low__________

high_________

boring_______

difficult________

late__________

many_________

much_______

nicerbettermorebeautifullowerhighermoreboringmoredifficultlatermoremoreThesuperlativeofadjectivesWhenwecomparemorethantwopeopleortwothings,weusethesuperlativeofadjectives.Theredlaptopisthesmallest

among

thethreeWeformthesuperlativeslikethis:AdjectivesSuperlativeofadjectiveshighthehighestcareful

themostcarefulinterestingthemostinterestingWorkouttheruleToformthesuperlativeofadjectives,weoftenadd__________totheshortadjectivesanduse__________withlongadjectives.Weusuallyuse__________infrontofthesuperlativeofadjetives.estmostthe形容詞最高級的變化的規(guī)則：

（一）單音節(jié)詞，雙音節(jié)詞的比較級

⑴一般在詞尾加est

；

⑵以字母e結尾，加st

；

⑶以一個元音字母和一個輔音字母結尾，應雙寫末尾的輔音字母，再加est

；⑷以“輔音字母+y”結尾，先把y變i，再加est

。（5）以ly結尾構成形容詞詞綴如：friendlymostfriendly（6）分詞形容詞前加most如：boringinterestingboredinterested（7）以形容詞后綴結尾的形容詞前加mostcarfulmostcareful（8）特殊變化well/goodbestmany/muchmot

（二）多音節(jié)詞的比較級前加mostthemostdifficultthemostcarful

記住別忘了在最高級前加the哦Readandcompare:younglongfullshortsmalloldfineyoungeryoungestlongerlongestfullerfullestshortershortestsmallersmallestolderoldest

finerfinest記住別忘了在最高級前加the哦easyhungryearlyheavybigredeasiereasiesthungrierhungriest

heavierheaviestbiggerbiggest

redderreddestearlierearliestReadandcompare:B1.Davidisshoppingforacamera.Lookatthephotosandwritetheletterofthecorrectmodelaftereachstatement.DavidtoldhisfriendTonyabouthisshoppingtrip.CompleteDavid’ssentenceswiththesuperlativeoftheadjectivefromthebox.

expensivelightoldsmallTony:Didtheyshowyouanycameras?David:Yes.(1)Thesmallestmodelis(2)99.8X56.4mmX24.5mm.The(3)______________modelcosts(4)_______________________The(5)_______________modelwasmadein(6)________________The(7)___________________modelweighs(8)_________________mostexpensive￥3589lightest170goldest2010Let’sdomoreexercise根據(jù)句意填入單詞的正確形式：

1.Mybrotheristwoyears_______(old)thanme.

2.Whichis__________(heavy),theelephantorthepig?

3.Isyoursister_________(young)thanyou?Yes,

sheis.

4.Whois___________(thin),youorHelen?

Helenis.

5.Whose（誰的）pencil-boxis__________(big),yoursorhers?Hersis.

olderheavieryoungerthinnerbiggerIthinkEnglishis_________thanmaths.A.importantB.moreimportantC.mostimportantD.