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1、形容词、副词的比较级和最高级Aimsanddemands1.Howtoformthecomparativeandsuperlativedegreesofadjectivesandadverbs.(怎样构成形容词和副词的比较级和最高级）2.Howtousethecomparativeandsuperlativedegreesofadjectivesandadverbs.3.HowtoimproveourabilitiesofusingEnglish.Howtoformthem.单音节词，少数双音节形容词和副词的比较级和最
2、高级的规则变化原级比较级最高级tall----taller----tallestlong—longer—longestshort—shorter—shortest1:单音节词，少数双音节词在词尾加er构成比较级，加est构成最高级。nice--nicer--nicestlarge–larger--largestcute—cuter—cutest2:以不发音的e结尾的词,直接在词的后面加r构成比较级,加st构成最高级.hot–hotter--hottestbig—bigger—biggestfat—fatter—fatt
3、est3:重读闭音节词,如末尾只有一个辅音字母应先双写这个辅音字母,再加er构成比较级，加est构成最高级。easy--easier–easiestheavy—heavier—heaviesthappy—happier—happiest4:以辅音字母+y结尾的词,先变y为i再加er构成比较级，加est构成最高级。5：双音节词,多音节词在词前加more/less构成比较级，加most/least构成最高级。双音节词,多音节形容词和副词的比较级和最高级的规则变化.quickly—more/lessquickly—most/
4、leastquicklyheavily—more/lessheavily—most/leastheavilyfantastic—more/lessfantastic—most/leastfantastic注：clever,lovely,friendly等用-er和-est或more和most皆可。形容词/副词比较级和最高级的不规则变化good/well–better--bestbad/badly/ill–worse--worstold–older（旧）/elder（年龄）--oldest/eldestmany/much
5、–more--mostlittle–less--leastfar–farther（距离）/further（意义）--farthest/furthest巧记口诀：多与少，好与坏，相差不是很远。Howtousethem.形容词，副词比较级和最高级的基本用法1.同级相比（肯定），与……一样：用“as……as”LinTaoisascleverasJim.（否定）与……不一样：用“notas(so)……as”AnndoesnotdoascarefullyasJane.（同义句）Janedoes____________thanAn
6、n.Anndoes____________thanJane.2.两者相比用“比较级”Thiscakeis________thanthatone.(small)Whichis________,thesunorthemoon?(big)lesscarefullymorecarefullysmallerbigger3.三者或三者以上相比，用最高级，形容词最高级前加the,副词最高级形式句中the可以省略。TheYangtzeRiveristhelongestriverinChina.（同义句）TheYangtzeRiveri
7、s________than__________riverinChina.TheYangtzeRiveris________than__________riversinChina.longeranyotherlongertheotherHowtoperfectthem.形容词,副词比较级和最高级的特殊用法.“比较级连用”,表示“越来越……”It’sgettingwarmerandwarmerinspring.She’smoreandmorecareful/beautiful.2.表示“比较程度”，常用alittle,al
8、ot,much,even修饰比较级。Heismuch/alottallerthanI.()Mybrotheris_____moreoutgoingthanme.A.manyB.littleC.muchc3.在最高级前可以加序数词加the表示“第几最……的”TheYellowRiveristhesecondlongestriveri
