形容词的比较级和最高级一、一般句式A+is/are+形容词比较级+than+BA是主格B是宾格如：Sheistallerthanme.二、形容词比较级变化：（一）规则变化1.单音节词末尾加-er（比较级），-est（最高级）原级比较级最高级greatgreatergreatestsmallsmallersmallestfastfasterfastestsoftsoftersoftest2.单音节如以e结尾，只加-r（比较级），-st（最高级）原级比较级最高级largelargerlargestsafesafersafestnicenicernicestfinefinerfinest3.闭音节单音节词(末尾只有一个辅音字母，须先双写这个辅音字母)再加-er（比较级），-est（最高级）原级比较级最高级bigbiggerbiggesthothotterhottestthinthinnerthinnestsadsaddersaddest特别提醒：new,few,slow,clean等词含有字母组合，且发的是长元音，不用双写。4.以-y结尾的词，如-y前是辅音字母，则变y为-i，再加-er和-est。以-e结尾的词只加-r和-st原级比较级最高级prettyprettierprettiesteasyeasiereasiestbusybusierbusiest5.双音节、多音节形容词(即音标中含有三个或三个以上元音音素的词)，在单词前面加上“more”“most”构成比较级、最高级：原级比较级最高级beautifulmorebeautifulmostbeautifulinterestingmoreinterestingmostinterestingdifficultmoredifficultmostdifficulthonestmorehonestmosthonest特别提醒：以形容词前缀un构成的三音节形容词不适合上述情况：如：unhappy-unhappier-unhappiestuntidy-untidier-untidiest6.以形容词+ly构成的副词要在前面加more,most原级比较级最高级slowlymoreslowlymostslowlyquicklymorequicklymostquicklyfriendlymorefriendlymostfriendly7.由ing分词和-ed分词演变过来的形容词只能加more或most来表示比较级和最高级：原级比较级最高级interestingmoreinterestingmostinterestingexcitedmoreexcitedmostexcitedtiredmoretiredmosttiredboringmoreboringmostboring（二）不规则变化：原级比较级最高级badworseworstfarfartherfarthestfarfurtherfurthestgoodbetterbestillworseworstlittlelessleastmanymoremostmuchmoremostwellbetterbest练习题：请写出下列形容词的比较级和最高级big__________________small__________________new__________________tall__________________short__________________old__________________strong__________________fat__________________hot__________________cold__________________thin__________________nice__________________good__________________high__________________bad__________________much__________________low__________________dirty__________________cheap__________________easy__________________ugly__________________heavy__________________excited__________________pretty__________________interesting__________________delicious__________________beautiful__________________expensive___