海淀教研：初二英語Unit3 比較級

GRAMMAR英語中要比較兩個(gè)事物或動(dòng)作，就會(huì)用到形容詞或副詞的比較級。e.g.Tomisshort.（形容詞）Jackisshorter.JackisshorterthanTom.e.g.Iworkhard.（副詞）Heworksharder.Heworksharderthanme/Ido.Sentencepattern(句子結(jié)構(gòu)):表示兩者比較的常用結(jié)構(gòu)（A和B比較）：A+be動(dòng)詞+形容詞的比較級+than+BA+實(shí)義動(dòng)詞+副詞的比較級+than+B如：Youarethinnerthanme.Thisrulerislongerthanthatone. Tomrunsfasterthanme.Iamtaller.Youaretall.Iam

tallerthan

you(are).Peggyishappier.Theyarehappy.Peggyis

happier

than

theyare(them).Iambetter.Maryisgood.Iam

betterthan

Mary(is).￥100￥200Whichismoreexpensive,thebrowncoatortheyellowcoat?Theyellowcoatismoreexpensivethan

thebrownone.Thebrowncoatisexpensive.DonaldDuckHarryPotterWhichismoreinteresting?HarryPotterismoreinterestingthanDonaldDuck.DonaldDuckisinteresting.Whichgoesfaster,thebikeorthecar?Thecargoesfaster

thanthebike.Thebikegoesfast.Whichflieshigher,theplaneorthebird?Theplaneflieshigher

thanthebird.Thebirdflieshigh.Whichrunsfaster,thedogorthesheep?Thedogrunsfaster

thanthesheep.Thesheeprunsfast.構(gòu)成方法原級比較級longfewcheaplongerfewercheapernicesafelatenicersaferlaterbighotthinslimbiggerhotterthinnerslimmerprettyunhappyheavyprettierunhappierheavier大部分單音節(jié)詞在詞尾加-er或-est以字母e結(jié)尾的詞，加-r或-st重讀閉音節(jié)詞只有一個(gè)輔音字母時(shí)，應(yīng)先雙寫輔音字母，再加-er或-est以輔音字母+y結(jié)尾的雙音節(jié)詞，先改“y”為“i”,再加-er或-estFormComparatives構(gòu)成方法原級比較級generouscarefuldangerousamazingmoregenerousmorecarefulmoredangerousmoreamazing不規(guī)則變法good/wellbetterbad/badly/illworsemany/muchmorelittlelessfarfarther（更遠(yuǎn)的）further（深入的）oldolder/elder部分雙音節(jié)詞和多音節(jié)詞在前面加more或most形容詞副詞的比較級變化（規(guī)則變化）1.單音節(jié)和少數(shù)雙音節(jié)詞比較級的構(gòu)成。1）在詞尾加-er;

tall—tallersmart—smartershort—shorterhigh—higher2)以不發(fā)音的字母e結(jié)尾的，加-r;

nice—nicerlarge—larger

fine—finerlate—later3)重讀閉音節(jié)如末尾只有一個(gè)輔音字母，須先雙寫這個(gè)輔音字母，再加-er；

big—biggerfat—fatterthin—thinnerred—redder

hot

—hotterwet—wetter

4)以輔音字母+y結(jié)尾的雙音節(jié)詞，先改y為i再加er

；

happy—happierearly—earlierfunny—funniereasy—easier

5)多音節(jié)詞和部分雙音節(jié)詞要在單詞前面加more；

important—moreimportantdelicious—moredeliciousexpensive—moreexpensiveathletic—moreathleticoutgoing—moreoutgoingtired—more

tiredserious—more

serious不規(guī)則變化good/well—better bad—worsemany/much—more little—lessfar—farther/further

注：有些形容詞副詞沒有比較等級如：right,wrong,woolen,very