八年级英语上册 形容词与副词的比较等级用课件 人教新目标版 【精编】

The Use of Adjectives & Adverbs,Yangzhen Middle School Liu Qing,Good , better , best,Never let it rest .,Till good is better,And better , best .,好上加好，直到最好； 精益求精，永无止境。,Lets read!,形容词的比较级构成,规则变化,不规则变化,一、形容词、副词的比较级构成的规则变化： 1、 一般在形容词、副词后加上er表示比较级 原级 比较级 1）small small 2) young young 3) fast fast,er,er,er,2、 以不发音的e结尾的，只加上r表示 比 较级。 原级 比较级 1) large large 2) nice nice 3) fine fine,r,r,r,3、以辅音字母+y 结尾的，把y改为i,然后加上er表示比较级。原级 比较级 1）early early 2) happy happy,ier,ier,4、重读闭音节结尾、且末尾只有一个辅音字母，双写最后一个辅音字母，然后加上 er表示比较级。 原级 比较级 1） big big 2) thin thin3) wet wet 4) fat fat 5) hot hot,ger,ner,ter,ter,ter,5 部分双音节和多音节的形容词，副词，在这些形容词和副词前加上more表示比较级。 原级 比较级 1) expensive expensive 2) careful careful 3) exciting exciting 4) boring boring 5) interesting interesting6) carefully carefully,more,more,more,more,more,more,二、形容词和副词比较级的不规则变化,better,worse,less,more,fartherfurther,older elder,三、部分形容词和副词的比较级的特殊情况：,1、某些单音节形容词，加more 构成比较级。 glad more glad pleased more pleased tired more tired,2、有些双音节和单音节形容词，既可以加er构成比较级，也可以加more 构成比较级。 friendly friendier more friendly huge huger more huge calm calmer more calm true truer more true clever cleverer more clever,important easy wet happycareful thin good hot easily many big heavy delicious,练习：写出下列词的比较级,more important,easier,wetter,happier,more careful,thinner,better,hotter,more easily,more,bigger,heavier,more delicious,形容词的比较级,一： 用法用于两者（人或物）之间，表示“其中一个比另一更”或“较”，后面通常用连词than连结另一个比较的对象，其基本句型是：主语谓语（系动词/行为动词）形容词比较级（+其它）than对比对象。 eg:,Which country is larger?,U.S.A,Australia,USA is larger than Australia.,The Yellow River,Which river is longer?,The Changjian River,The Changjiang River is longer than the Yellow River.,Linda has longer hair than lucy.,Lucy,Linda,（3）“比较级+and+比较级”表示 “越来越” eg:In spring,the days are getting longer and longer. 春天，日子越来越长了。 She is more and more athletic . 她越来越健壮了。,than 后面接代词时，一般要用主格，但在口语中也可以换成宾格。 eg: He is good at math than I (me). 他比我更擅长数学。,（4）“The +比较级，the +比较级”表示“越，就越” eg：The busier he is ,the happier he feels. 他越忙就越高兴。,（5）形容词比较级前可加数词，表示“大（小）多少”“长（短）多少” eg:He is five years younger than me. 他比我小五岁。,（6）表示倍数时用:“times（倍，倍数）+比较级+than”或“times as+原级+as” eg:My room is three times bigger than yours. 我的房间比你的大三倍。 My room is four times as big as yours. 我的房间是你的四倍。,(8)、用比较级形式表示最高级的意思:比较级+than any other+单数eg:He is taller than any other boy in his class.,vegetables,pizza,Which is more delicious,vegetables or pizza?,(9)表示两者之间的选择， 可使用“Which who is+ 比较级，or?”,Who is more popular,Beckham or Zhao Benshan?,Beckham,Zhao Benshan,(10)形容词原级的常用句型,Tom is as tall as Mike.汤姆和迈克一样高。,as+形容词原形+as,There are as many students in our class as yours. 我们班有和你们班一样多的学生。,Tom is as old as Mike.汤姆和迈克一样大。,否定 not as+形容词原形+as “和 不一样” 或 not so+形容词原形+as “不及不如,Lucy is not as tall as Mike.,Lucy is not so tall as Mike.露西没有迈克那样高。,二. 原级和比较级前面通常使用的修饰词：（一）在原级前面通常使用very, quite, too, much too, a little, as, so 等。 eg: 1. The room is very big. 2. The person is quite clever. 3. Today is too hot. 4. He eats too much, so hes much too heavy. 5. He is a little angry.,（二）在比较级前面使用的修饰词有： even（更，更加），a little（有点）， far/ much/ a lot （更加，的多） eg: 1. Yesterday was hot, but today is even hotter. 2. Im a little taller than Mary. 3. This skirt is far/ much/ a lot more beautiful than that one.,Follow ups(随堂练习),1、The Changjiang River is _ than any other river in China. A. shorter B. longer C. shortest D. longest2、Bob never does his homework _ Mary. He makes lots of mistakes. A. so careful B. as carefully as C. carefully as D. as careful as3、_ she is, _ she feels. A. The more busy, the more happy B. The busy, the happy C. Busier, happier D.The busier, the happier4、The weather is getting c_ a_ c_ .(越来越冷),B,B,D D,older nd older,6. In our city its in July ,but it is even _in August . A. hotter; hottest B. hot; hot C. hotter; hot D. hot; hotter,7. An elephant is than a tiger. A. Heavy B. very heavy C. the heaviest D. heavier,8. Which subject is _ , physics or chemistry ? A. interestin