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1、Unit7 Whats the highest mountain in the world?The sixth period Comparative And Superlative Forms Of Adjectives Teaching aims:1.How to form the comparative and superlative degrees of adjectives and adverbs2.How to use the comparative and superlative degrees of adjectives and adverbs.Teaching methods:

2、Explain briefly and Practice moreLearning methods: Cooperative approach ; deductive approachTeaching aids : pptTeaching procedures:Step1: Introdction1、概念:形容词和副词的比较: 绝大部分形容词和副词有三个等级:原级、比较级、最高级。原级指形容词和副词的原形;比较级用来表示“较”或“更一些”;最高级则表示“最”2、形容词的比较级和最高级的规则变化:(1): 一般直接在词尾加er或 est以字母e结尾的直接加r或st以辅音字母加y结尾的形容词,要变

3、y为i再加er或est以重读闭音节结尾且末尾只有一个辅音字母的形容词,要双写末尾的辅音字母再加er或 est多音节词或部分双音节词的比较级和最高级在其前面加more或most(2): 不规则形容词的比较级最高级原级比较级高级good /wellIill/bad/badlyMmuch/manyflittleooldffarPractice: 写出下列形容词的比较级和最高级( 1)ill/bad /badly (2) busy (3)big (4) rude (5)hot (6) easy(7)little(8) fast(9)hard(10) many /much(11)happy (12)fa

4、r(13) careful (14)good/well (15) difficult (16)small (17)quiet (18) old3、句式 -、 形容词和副词的原级:1. 表示两者(A与B)在某一方面相同时用句型: A + 谓语 + as + 形容词或副词的原形 + as+ B. eg: 英语和数学一样重要。 English is as important as math. 2. 两者(A与B)在某一方面A不如B时用句型: A + 谓语+ not as / so + 形容词或副词的原形 + as+ B. eg: Tom 不如 Sam 高。 Tom is not as / so ta

5、ll as Sam.二、形容词比较级的用法:(1)两者(A与B)实行比较,“A比B较/更”。 A + 谓语 + 形容词或副词的比较级 + than + B. eg: Tom 比 Sam 高。 Tom is taller than Sam.(2)两者(A与B)实行比较,“A比B大/长/高” A+谓语+数量词+形容词或副词的比较级+than+ B eg: Tom比Sam大两岁。 Tom is two years older than Sam. (3)两者(A与B)实行比较,“哪一个更/较” Which/Who 谓语 + 比较级, A or B ? eg:数学和英语哪一科较简单? Which is

6、easier, math or English? (4)两者(A与B)实行比较,“其中A是两者中较” A+谓语 + the +比较级 + of the two. eg:Tom is the taller of the two boys. 汤姆是这两个男孩中最高的 . (5)比较级+ and + 比较级, 表示 “越来越” eg:Now it is hotter and hotter. 现在越来越热。 shorter and shorter 越来越短 longer and longer 越来越长 more and more beautiful 越来越漂亮 more and more intere

7、sting越来越有趣(6)The + 比较级,the + 比较级 “越,就越” eg:越多越好。 The more , the better. 你吃的越多,你就越胖。 The more you eat, the fatter you will become. (7)用形容词的比较级来表达最高级的概念: A+谓语+比较级+than any (other) +可数名词单数+范围。 “A是中最的”或“A比(其他)任何都” 注:当A在范围内比较时,必须加other;当 A不在范围内比较时,去掉other. eg:上海比中国其他的任何一个城市都大 Shanghai is bigger than any

8、other city in China. 上海比日本的任何一个城市都大 Shanghai is bigger than any city in Japan. (8)修饰比较级的词 much(的多)、far (的多)、 a lot(的多)、even(更)、still(仍然)、 any (任何) a bit(一点儿) a little (一点儿) eg: This city is much more beautiful than that one.这座城市比那座城市漂亮的多。 Today is even hotter than yesterday. She drives still more ca

9、refully than her husband. 她开车仍然比她丈夫认真。 (9)修饰形容词原级的词: very、rather、pretty、so、quite、too He is too tired to walk on. 他太累了以至于不能再继续走了。 My brother runs so fast that I cant follow him. 我弟弟跑得那么快以至于我跟不上他。 His lifestyle is quite different from mine. 他的生活方式和我的相当不同。 三、形容词、副词的最高级 形容词和副词的最高级常用来表示三者或三者以上人或物的比较。形容词最

10、高级前必须加定冠词the, 而副词的最高级前可以不加定冠词the。但是当形容词的最高级前已经有了作定语用的形容词性的物主代词或名词所有格时,不再加the。 1、主语+谓语+the +形容词或副词的最高级 +of/in短语。表示“主语是中最的”。 My mother is the busiest in my family.2、one of the+形容词最高级+cn.复数 “最之一”。 Beijing is one of the largest cities in China. 北京是中国最大城市之一。3、the + 序数词 + 形容词最高级 + 名词 表示“第几大长高” The Yellow

11、River the second longest river in China黄河是中国第二长河。4、Which/Who +谓语+ the +形容词或副词最高级, A ,B or C ? 表示“三者中哪一个更、最” Which is the biggest , the moon, the earth or the sun ? 月球、地球和太阳哪一个更大?5、定语从句中, Tom is the cleverest boy I know.四、 比较级与最高级的互换Jim is taller than any other boy in our class.(吉姆比我们 班上任何一个男孩都高)= Ji

12、m is taller than the other boys in our class.(在我们班上吉姆其它的男孩高)= Jim is the tallest in our class.(吉姆是我们班最高的)Practice:I.用形容词的正确形式填空1.Which do you like _ (well), apples, pears or bananas?2.I think this story is _ (interesting) than that one.3.In the morning he is _ (early). His father is _ (early) than h

13、e. His mother is the _ (early) of the three.4.The Yellow River is the second _ (long) river in China.5.He thinks his corn is _ (delicious) of all the food.6.I feel math is _ (difficult) than Chinese.句型转换:1. Tom is tall. Jim is short.(比较级合并) Tom is _ _ Jim.2. My hair is long. Marys hair is longer .(合

14、并成一句) Marys hair _ _ _ mine.3. Pedro is thinner than Sam. (改为同义句) Sam is _ _ Pedro.4. My sister is better at study than me. She is clever. (改为同义句) My sister is _ clever (聪明的) than me at study.5. Peter is funny. Paul is funny, too. (合并成一句) Peter is _ funny _ Paul.单项选择。(走进中考)1. (2007年厦门市)This story is

15、 not _ as that one. A. more interesting B. less interesting C. so interested D. so interesting2. (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 3. (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 4. (2009年济南市)_children there are in a family, _ their

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