六年级-比较级与最高级的用法(共7页).doc

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1、精选优质文档-倾情为你奉上课前准备:检查学生掌握单词情况(听写) 一、形容词、副词的比较级和最高级的构成规则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;(1)单音节词如:smallsmallersmallest shortshortershortest talltallertallest greatgreatergreatest(2)双音节词如:clevercleverercleverest narrownarrowernarrowest 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;如:largelargerla

2、rgest nicenicernicest ableablerablest3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;如:bigbiggerbiggest hothotterhottest fatfatterfattest4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;如:easyeasiereasiest heavyheavierheaviest busybusierbusiest happyhappierhappiest5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;如:beaut

3、ifulmore beautifulmost beautifuldifferentmore differentmost different easilymore easilymost easily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。例句: The Sahara is the biggest desert in the world. (2) 形容词most前面没有the,不表示最高级的含义,只表示非常。 It is a most important problem. =It is a very important problem. 6有少数形容词、副词的比较级

4、和最高级是不规则的,必须熟记。如:goodbetterbest wellbetterbestbadworseworst illworseworstoldolder/elderoldest/eldest many/muchmoremost littlelessleast far further/farther furthest/farthest词形变换。比较级 最高级large _ _fast _ _easy _ _wet _ _good _ _important _ _well _ _bad _ _many _ _little _ _far _ _strong _ _patient _ _sa

5、fe _ _expensive _ _ 二、形容词、副词的比较级和最高级的句子公式:比较级形容词物体A + am / are / is + 形比 + than + 物体B.I am taller than you.Pasta is more delicious than pizza.副词物体A + 行为动词 + 副比 + than + 物体B.Cheetahs run faster than goats.He studies better than me. 最高级1)物体A + am / are / is + the + 形最高级 + 比较范围(of + 人/物,in +地方).I am th

6、e tallest in the class.Pasta is the most delicious food of the three.2)物体A + 行为动词 + 副词最高级 + 比较范围(of + 人/物,in + 地方).Cheetahs run fastest in the world.He studies best of us. 1. She is _ than _ . A. busier / us B. busier / we C. more busy / us D. more busy / we2. Jane is _ than Betty. A. less taller B.

7、 less tallest C. less tall D. not as tall3. China is _ country in the world. A. the third largest B. the largest third C. the third large D. a third largest4. -Which is _ season in Beijing?-I think its autumn.A.good B.better C.best D.the best5- Which is_ , the sun, the moon or the earth?- Of course,

8、 the moon is.A.small B.smaller C.smallest D.the smallest6.The air in Beijing is getting much _ now than a few years ago.A. clean B. cleaner C. cleanest D. the cleanest7. Mobile phones are very popular now and they are _ than before.A. cheap B. cheaper C. cheapest D. the cheapest8I study English as_a

9、s my brother.A.hard B. harder C. hardest9. Which is _ , a bicycle or a computer?A. expensive B.more expensive C.the most expensive10. The Yellow River is one of _rivers in China. A long B longer C the longest11.She is the second _student in our class. A. tall B. taller C. tallest用括号里的词的适当形式填空。 1. To

10、m can jump _(high). He jumps _(high) than the other boys inhis class. 2. Janet sing _(well) in her class. She can sing _(well) than her music teacher, too. 3. My father is _(handsome). But my brother is _(handsome) than him. He is _(handsome) in my family. 4. I have _(many) books in my class. But my

11、 teacher has _(many) books than _(I). 5._(they) house is much _(old) than _(we). 三、形容词和副词比较级的用法1“A + be +形容词比较级 + than + B” 意思为“A比B更”。如:This tree is taller than that one. 这棵树比那棵树高。 注意: 在含有连词than的比较级中,前后的比较对象必须是同一范畴,即同类事物之间的比较。 在比较级前面使用much,表示程度程度“强得多”。 如:A watermelon is much bigger than an apple. ve

12、ry, quite一般只能修饰原级,不能修饰比较级。 2“比较级 + and + 比较级”或“more and more +原级”表示“越来越”如:It becomes warmer and warmer when spring comes. 春天来了,天气变得越来越暖和了。It is getting cooler and cooler.天气越来越凉爽。The wind became more and more heavily.风变得越来越大。Our school is becoming more and more beautiful. 我们的学校变得越来越美丽。3在含有or的选择疑问句中,如

13、果有两者供选择,前面的形容词要用比较级形式。如:Who is taller,Tim or Tom? 谁更高,Tim还是Tom?4. “the +比较级, the+比较级”,表示“越越”。The more money you make, the more you spend.钱你赚得越多,花得越多。The sooner,the better. 越快越好。5. 表示倍数的比较级用法:. A is times the size /height/length/width of B. 如:The new building is three times the height of the old one.

14、这座新楼比那座旧楼高三倍。(新楼是旧楼的四倍高). A is times as big /high/long/wide/large as B.如:Asia is four times as large as Europe.亚洲是欧洲的四倍大。(亚洲比欧洲大三倍). A is times larger /higher/longer/wider than B.如:Our school is twice bigger than yours.我们学校比你们学校大两倍。6.形容词、副词的最高级形式主要用来表示三者或三者以上人或事物的比较,表示“最”的意思。句子中有表示范围的词或短语。如:of the t

15、hree, in our class等等。如:He is the tallest in our class. 他在我们班里是最高的。7.否定词语+比较级,否定词语+ so as结构表示最高级含义。 Nothing is so easy as this. =Nothing is easier than this. =This is the easiest thing.8. 比较级与最高级的转换: Mike is the most intelligent in his class. Mike is more intelligent than any other student in his cla

16、ss注意:修饰比较级和最高级的词1)可修饰比较级的词.a bit, a little, rather, much, far, by far, many, a lot, lots, a great deal, any, still, even等。 . 还可以用表示倍数的词或度量名词作修饰语。 . 以上词(除by far)外,必须置于比较级形容词或副词的前面。 注意: 使用最高级要注意将主语包括在比较范围内。 (错) Tom is the tallest of his three brothers. (对) Tom is the tallest of the three brothers. 2)下

17、列词可修饰最高级:by far, far, much, mostly, almost。 This hat is nearly / almost the biggest. 注意: a. very可修饰最高级,但位置与much不同。 This is the very best. This is much the best. b. 序数词通常只修饰最高级。 Africa is the second largest continent. 选择题1. This box is_ that one. A. heavy than B. so heavy than C. heavier as D. as hea

18、vy as 2. When we speak to people, we should be . A. as polite as possible B. as polite as possibly C. as politely as possible D. as politely as possibly 3. This book is_ that one, but_ than that one.A. as difficult as; expensive B. as more difficult as; more expensive C. as difficult as; more expens

19、ive D. more difficult as; as expensive 4. I think the story is not so _ as that one. A. interesting B. interested C. more interesting D. most interesting 5. His father began to work_ he was seven years old. A. as old as B. as early as C. since D. while6.I think science is _ than Japanese. A. much im

20、portant B. important C. much more important D. more much important7.This pencil is_ than that one.A. longest B. long C. longer D. as long 8.My mother is no _ young.A. shorter B. longer C. little D. few 9.These children are _ this year than they were last year. A. more tall B. more taller C. very tal

21、ler D. much taller10.It was very hot yesterday, but it is_ today.A. even hotter B. more hotter C. much more hot D. much hot 四、总结与作业1.选择填空。1.Birds can fly _, eagles can fly_than birds. They fly _ in theworld. ( high, higher, highest )2. I am _ than my brother, but my little sister isthe _ of us. (fat

22、, fatter, fattest )3. Which can swim _, fish or sharks? ( well,better, best )4. The green book is a _ book, but the red oneis much _ than the green one. Its the _ book in the bookshop. (nice, nicer, nicest )5. Look at that boy, he is running _ (fast,faster).6. I think that book is _ (good, better) f

23、or you.7. The new library has _ (many, more) books thanthe old one.8. Sally is _ (tall, taller) than her cousin.9. Our school is much _ (large, larger) than yours.10. Look, Janet is jumping _ (high, higher) than Mike.2.汉译英。1.她比我漂亮。(pretty)_2.我学习比他们好。(well)_3.她是我们中间最漂亮的。(pretty)_4.我学习是全班上最好的。(well)_专心-专注-专业

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