一、形容词、副词的比较级和最高级的构成规则<br>1.一般单音节词和少数以-er,-ow结尾的双音节词,比较级在后面加-er,最高级在后面加-est;<br>(1)单音节词<br>如:small→smaller→smallest short→shorter→shortest<br>tall→taller→tallest great→greater→greatest<br>(2)双音节词<br>如:clever→cleverer→cleverest narrow→narrower→narrowest<br>2.以不发音e结尾的单音节词,比较在原级后加-r,最高级在原级后加-st;<br>如:large→larger→largest nice→nicer→nicest able→abler→ablest<br>3.在重读闭音节(即:辅音+元音+辅音)中,先双写末尾的辅音字母,比较级加-er,最高级加-est;<br>如:big→bigger→biggest hot→hotter→hottest fat→fatter→fattest<br>4.以“辅音字母+y”结尾的双音节词, 把y改为i,比较级加-er,最高级加-est;<br>如:easy→easier→easiest heavy→heavier→heaviest<br>busy→busier→busiest happy→happier→happiest<br>5.其他双音节词和多音节词,比较级在前面加more,最高级在前面加most;<br>如:beautiful→more beautiful→most beautiful<br>different→more different→most different<br>easily→more easily→most easily<br>注意:(1)形容词最高级前通常必须用定冠词 the,副词最高级前可不用。<br>例句: The Sahara is the biggest desert in the world.<br>(2) 形容词most前面没有the,不表示最高级的含义,只表示”非常”。<br>It is a most important problem.<br>=It is a very important problem.<br>6.有少数形容词、副词的比较级