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单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,.,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,.,*,形容词的比较级和最高级,.,形容词有三个形式：,原形,最高级,比较级,cleaner,更,干净的,clean,干净的,cleanest,最,干净的,.,一、形容词的比较级和最高级变化规则,.,比较级和最高级变化规则（,1,）：,1.,一般的单音节词,/,少数的双音节词：,比较级：词尾,+er,最高级：词尾+est,.,比较级和最高级变化规则（,2,）：,2.,以,e,结尾的单词：,比较级：词尾,+r,最高级：词尾+st,.,比较级和最高级变化规则（,3,）：,3.,以辅音字母,+y,结尾的单词：,比较级：,y,变,i+er,最高级：,y,变,i+est,.,比较级和最高级变化规则（,4,）：,4.,以重读闭音节结尾，而且只有一个辅音字母的单词：,比较级：双写辅音字母,+er,最高级：双写辅音字母+e,st,.,比较级和最高级变化规则（,5,）：,5.,由两个或两个以上音节构成的单词：,比较级：词前,+more,最高级：词前,+most,.,6,：不规则变化：需要单独记忆,原形,比较级,最高级,good/well,better,best,bad/ill,worse,worst,many/much,、,j*N,most,few/little,（少的）,less,least,far,farther/further,farthest/furthest,old,older/elder,oldest/eldest,.,二、形容词比较等级的用法,.,1.,原级的用法：用于二者的比较,肯定结构：,as+,形容词原级,+as,，意为,“,和,.,一样,”,。,Jim is as tall as his father.,否定结构：,not,as+,形容词原级,+as,，,not so+,形容词原级,+as,，意为,“,不如,.”,。,Jim is not as/so tall as his father.,My English is not as good as Mary.,.,2.,比较级的用法：用于二者的比较,结构：比较级,+than,，意为,“,比,.,更,.”,。,Sam is taller than Jim.,This picture is more beautiful than that one.,.,3.,最高级的用法：用于,3,者或以上的比较,结构：,the+,最高级,+,比较范围，意为,“,最,.”,。,Sam is the tallest student in the class.,This is the most beautiful place in the world.,.,写出下列句子,1.,苹果比西瓜小。,2.Peter,比,Jim,高。,3.,直尺比铅笔长。,4.,铅笔比直尺短。,Apple is smaller than watermelon.,Peter is taller than Jim.,Ruler is longer than pencil.,Pencil is shorter than ruler.,.,5.,兔子比乌龟慢。,6.Tony,比,Lucy,强壮。,7.,老虎比小狗大。,8.,吉普车比自行车快。,Rabbit is quicker than turtle.,Tony is stronger than Lucy.,Tiger is bigger than dog.,Jeep is quicker than bike.,.,9.,迈克是班里最聪明的男孩。,10.,玛丽是家里最快乐的孩子。,11.,这是铅笔盒里最长的铅笔。,12.,这是世界上最美味的食物。,Mike is the cleverest boy in the class.,Mary is the happiest child in the family.,This is the longest pencil in the pencilcase,This is the most delicious food in the world.,.,谢谢大家,.,
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