比较级和最高级1.在形容词词尾加上“er” “est” 构成比较级、最高级：bright（明亮的）—brighter—brightest broad（广阔的）—broader—broadest cheap（便宜的）—cheaper—cheapest clean（干净的）—cleaner—cleanest clever（聪明的）—cleverer—cleverest cold（寒冷的）—colder—coldest cool（凉的）—cooler—coolest dark（黑暗的）—darker—darkestdear（贵的）—dearer—dearest deep（深的）—deeper—deepestfast（迅速的）—faster—fastest few（少的）—fewer—fewestgreat（伟大的）—greater—greatest hard（困难的,硬的）—harder—hardest high（高的）—higher—highest kind（善良的）—kinder—kindestlight（轻的）—lighter—lightest long（长的）—longer—longestloud（响亮的）—louder—loudest low（低的）—lower—lowestnear（近的）—nearer—nearest new（新的）—newer—newestpoor（穷的）—poorer—poorest quick（快的）—quicker—quickestquiet（安静的）—quieter—quietest rich（富裕的）—richer—richestshort（短的）—shorter—shortest slow（慢的）—slower—slowestsmall（小的）—smaller—smallest smart（聪明的）—smarter—smartest soft（柔软的）—softer—softest strong（强壮的）—stronger—strongest sweet（甜的）—sweeter—sweetest tall（高的）-taller-tallestthick（厚的）—thicker—thickest warm（温暖的）—warmer—warmest weak（弱的）—weaker—weakest young（年轻的）—younger—youngest2.双写最后一个字母,再加上“er” “est”构成比较级、最高级：big（大的）—bigger—biggest fat（胖的）—fatter—fattesthot（热的）—hotter—hottest red（红的）—redder—reddestsad（伤心的）—sadder—saddestthin（瘦的）—thinner—thinnestwet（湿的）—wetter—wettest mad（疯的）—madder—maddest3.以不发音的字母e结尾的形容词,加上“r” “st” 构成比较级、最高级：able（能干的）—abler—ablest brave（勇敢的）—braver—bravestclose（接近的）—closer—closest fine（好的,完美的）—finer—finestlarge（巨大的）—larger—largest late（迟的）—later—latestnice（好的）—nicer—nicest ripe（成熟的）—riper—ripestrude（粗鲁的）—ruder—rudest safe（安全的）—safer—safeststrange（奇怪的）—stranger—strangest wide（宽广的）—wider—widestwise（睿智的,聪明的）—wiser—wisestwhite（白的）—whiter—whitest4.以字母y结尾的形容词,把y改为i,再加上“er”“est”构成比较级、最高级：busy（忙碌的）—busier—busiest dirty（脏的）—dirtier—dirtiestdry（干燥的）—drier—driest early（早的）—earlier—earliesteasy（容易的）—easier—easiest friendly（友好的）—friendlier—friendliest funny（好玩的）—funnier—funniest happy（开心的）—happier—happiest healthy（健康的）—healthier—healthiest heavy（重的）—heavier—heaviest hungry（饿的）—hungrier—hungriest lazy（懒惰的）—lazier—laziestlucky（幸运的）—luckier—luckiest naughty（调皮的）—naughtier—naughtiest noisy（嘈杂的）—noisier—noisiest pretty（美丽的）—prettier—prettiestsilly（傻的）—sillier—silliest spicy（辣的）—spicier—spiciestthirsty（渴的）—thirstier—thirstiest ugly（丑的）—uglier—ugliest5.双音节、多音节形容词,在单词前面加上“more” “most”构成比较级、最高级：afraid（害怕的）—more afraid—most afraidbeautiful（美丽的）—more beautiful—most beautifulcareful（仔细的）—more careful—most carefulcheerful（开心的）—more cheerful—most cheerfulcrowded（拥挤的）—more crowded—most crowdeddangerous（危险的）—more dangerous—most dangerousdelicious（美味的）—more delicious—most deliciousdifficult（困难的）—more difficult—most difficultexciting（令人兴奋的）—more exciting—most excitingexpensive（昂贵的）—more expensive—most expensivefamous（著名的）—more famous—most famousfrightened（受惊的）—more frightened—most frightenedfrightening（令人害怕的）—more frightening—most frighteninghard-working（勤奋的）—more hard-working—most hard-workinghelpful（有帮助的）—more helpful—most helpfulhonest（诚实的）—more honest—most honestimportant（重要的）—more important—most importantinteresting（有趣的）—more interesting—most interestingpolite（有礼貌的）—more polite—most politeterrible（可怕的）—more terrible—most terribletired（累的）—more tired—most tired6.不规则变化的形容词：bad（坏的）—worse—worstfar（远的）—farther—farthest(far—further—furthest)good（好的）—better—bestill（病的）—worse—worstlittle（少的）—less—leastmany（多的）—more—most much（多的）—more—mostold（年老的）—older—oldest ( old—elder—eldest) well（好的,身体好的）—better—best 原级用法: as + adj/ adv.的原级+ as , 否定式(not) so…as…只能修饰原级的词，very，quite，so，tooeg. The ruler is as long as that one.He sings as well as Jack.He doesn’t sing as(so) well as Jack.形容词比较级的用法:形容词的比较级用于两个人或事物的比较, 结构形式如下:1. A + is/ am/ are + 形容词比较级+ than + BShe is taller than I.Tom is more athletic than Sam.It is _________________today than it was yesterday. 今天的天气比昨天暖和。

This picture is __________________than that one. 这张照片比那张照片漂亮。

The sun is __________________than the moon. 太阳比月亮大得多。

2. 比较级+and+比较级, 表示“越来越”warmer and warmer, nicer and nicer, more and more beautiful,2. the+比较级…, the+ 比较级The more you read the book, the more interesting you found.3. 比较级的修饰语有: much, far, even, a little, a bit ,a lot,等如：He made fewer mistakes than I did.He is even richer than I.形容词最高级的用法:形容词最高级用于两个以上的人和物进行比较, 其结构形式为:主语+ 谓语(系动词) + the + 形容词最高级+名词+表示范围的短语或从句,比较常用在in, of 或among的结构中, 形容词最高级前+theI am the best of the three.He is the thinnest boy in my class.She is ___________ student ______her class. 她是班上最好的学生。

Shanghai is one of _________ cities ______China. 上海是中国最大城市之一。