1、more clever 和 cleverer 都可以英语的形容词和副词的比较级和最高级的构成一 规则变化1 单音节以及少数双音节的词,后面直接加 -er , -est 2以-e结尾的，在后面加-r , -st 3以辅音字母＋y结尾的词，把y变成i,再加-er , -est [注〕 shy ---- shyer , shyest / shier , shiest4重读闭音节的词。

2、要双写词尾字母，再加-er , -est 5多音节的词，要在前面加 more-, most-〔注〕少数单音节词前面加 more-, most- 构成比较级和最高级tired ---- more tired , most tired fond ----- more fond , most fondglad ----- more glad , most glad bored ---- more bored , most boredpleased---- more pleased , most pleased二不规则变化good /well------- better ,bestbad/badly/ill------ worse , worst many/much-------more , most little ------ less , least far ---- farther, farthes / firther , furthestold ---- older , oldest (GA) ---- older , oldest / elder , eldest (GB)三下列形容词和副词的比较级和最高级有两种形式cruel----- crueler, cruelest / more cruel , most cruel strict---- stricter , strictest / more strict , most strict often----- oftener , oftenest / more often , most often friendly------ friendlier , friendliest / more friendly , most friendlyclever----- cleverer, cleverest / more clever , most clever四 下列形容词和副词没有比较级和最高（即表示”最高程度”或”绝对状态”的形容词和副词没有比较级和最高级）empty , wrong , perfect , unique , extreme , excellent , favourite (GB)/ favorite (GA) , true , right , correct , extremely .