Aims and demandsAims and demands1.How to form the comparative and superlative degrees of adjectives and adverbs.(怎样构成形 容词和副词的比较级和最高级）和副词的比较级和最高级） 2.How to use the comparative and superlative degrees of adjectives and adverbs. 3. How to improve our abilities of using English.How to form them.单音节词，少数双音节形容词和副词的比较形容词和副词的比较 级和最高级的级和最高级的规则变化规则变化 原级原级 比较级比较级 最高级最高级 tall - taller - tallest longlongerlongest shortshortershortest 1:单音节词，少数双音节词在词尾加er构成比较级， 加est构 成最高级。 nice- nicer -nicest large larger- largest cutecutercutest 2:以不发音的e结尾的词,直接在词的后面加 r构 成比较级,加 st构成最高级.hot hotter- hottest bigbiggerbiggestfatfatterfattest 3: 重读闭音节词 ,如末尾只有一个辅音字母应先双 写这个辅音字母, 再加er构成比较级，加est构 成最高级。easy- easier easiest heavyheavierheaviesthappyhappierhappiest4:以辅音字母+y结尾的词, 先变y为i再加er 构成比较级，加est构成最高级。5 5：双音节词：双音节词, ,多音节词在词前加多音节词在词前加 more more /less构成构成 比较级，加比较级，加most most / least构成最高级。构成最高级。 双音节词,多音节形容词和副词的比较级和最高级的形容词和副词的比较级和最高级的规则变规则变 化化. . quicklymore /less quicklymost / least quickly heavilymore /less heavilymost / least heavily fantasticmore /less fantasticmost / least fantastic注：clever, lovely, friendly等用-er 和-est或more和 most皆可。形容词形容词/ /副词比较级和最高级的不规则变化副词比较级和最高级的不规则变化good/well better- best bad/badly/ill worse- worst old older（旧）/elder（年龄） -oldest/eldest many/much more- most little less- least far farther（距离）/further（意义） - farthest/furthest 巧记口诀：多与少，好与坏，相差不是很远。How to use them. How to use them. 形容词，副词比较级和最高级的基本用法形容词，副词比较级和最高级的基本用法 1. 同级相比（肯定），与一样：用“asas”Lin Tao is as clever as Jim. （否定）与不一样： 用“not as (so)as”Ann does not do as carefully as Jane.（同义句）Jane does _ _ than Ann. Ann does _ _ than Jane. 2. 两者相比用“比较级”This cake is _ than that one. (small)Which is _, the sun or the moon? (big)lesscarefullymore carefullysmaller bigger3. 三者或三者以上相比，用最高级，形容词最高级 前加the, 副词最高级形式句中 the 可以省略。The Yangtze River is the longest river in China.（同 义句）The Yangtze River is_ than _ _ river in China.The Yangtze River is_ than _ _ rivers in China.longerany otherlongerthe otherHow to perfect them. How to perfect them. 形容词,副词比较级和最高级的特殊用法.1.“比较级连用” ,表示“越来越” Its getting warmer and warmer in spring. Shes more and more careful/ beautiful. 2. 表示“比较程度”，常用a little, a lot, much, even 修饰比较级。He is much/ a lot taller than I. ( ) My brother is _ more outgoing than me. A. many B. little C. muchc3. 在最高级前可以加序数词加the表示“第几最的” The Yellow River is the second longest river in China. 4. “the+比较级+（主谓），the+比较级+（主谓）” ，表示“越，就越” The more friends we have, the happier we can feel. The harder you work, the better you will be. The later you go to bed, the worse it will be for your health.5. “one of the+最高级” 表示“最之一”，形容词 后的名词用复数形式。 Mr. Green is one of the most popular teachers in our school. ( ) 3）. October 12th was one of _ days in 2005. Shenzhou-VI was launched(发 射）successfully. A. exciting B. more exciting C. the most excitingc We can do itWe can do it单项选择。（走进中考）1. （2007年厦门市）This story is not _ as that one. A. more interesting B. less interesting C. so interested D. so interesting 2. （2005年甘肃省）It takes _ time to go to Beijing by plane than by train. A. more B. fewer C. longer D. less DD3. （2006年重庆市）Of the two pencil-boxes， the boy chose _ one. A. less expensive B. the least expensive C. the less expensive D. the most expensive C4. （2009年济南市）_children there are in a family， _ their life will be. A. The less； the better B. The fewer； the better C. Fewer； richer D. More； poorer B5. （2009年辽宁省）Miss Li is one of _ in our school. A. a popular teacher B. more popular teacher C. most popular teacher D. the most popular teachers D8.（2010重庆）Who did English homework better, Leo or Nick?-Leo is more careful. I think Leo did _ Nick.A. as good as B. as well as C. better than D. worse than7. （2010年厦门市）When winter comes， the days get _. A. short and short B. shorter and shorter C. long and long D. longer and longer 6. （2007北京市西城区）John is my _ friend of all the classmates. A. good B. better C. best D. the best CBC9. (2009重庆）Were happy that our country has developed_ these years than before.A. quickly B. less quickly C. more quickly D. most quickly 10. （2008重庆）-What bad weather!-Yes. The radio says it will be even_ later on. A. bad B. badly C. worse D. worstCC.重读闭音节形容词有fat-fatter big-bigger thin-thinner red-redder hot-hotter wet-wetter