。,Good,better,best,Neverletitrest.Tillgoodisbetter,Andbetter,best.,好上加好,直到最好;精益求精,永无止境。,Comparativeandsuperlativedegreesofadjectivesandadverbs,Grammar,TeachingandLearningAims,1.掌握形容词、副词的等级变化规则。,2.掌握形容词、副词的等级用法。,一、形容词、副词的比较级和最高级的构成规则(一)规则变化1.一般单音节词比较级在后面加-er,最高级在后面加-est.例如:smallsmallersmallestshortshortershortesttalltallertallestgreatgreatergreatest,2.以不发音e结尾的单音节词,比较级在原级后加-r,最高级在原级后加-st;如:largelargerlargestnicenicernicestableablerablest3双写末尾的辅音字母,比较级加-er,最高级加-est;如:bigbiggerbi