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1、好好学习 天天向上敎师姓名尹爱宏单位名称克州二中填写时间2020.8.25學科英语年级/册八年级上册敎材版本人敎版课题名称Unit 4 Whats the best movie theater?（形容词和副词的比较等级）难点名称形容词和副词的比较等级难点分析从知识角度分析为什么难1學生能學会关于形容词、副词最高级的常用词汇与句型。2.學生能用最高级来谈论周围的事物,提升學生的语言交际能力。从學生角度分析为什么难通过交流表达和训练,用形容词或副词的最高级形式来描述人或事物。难点敎學方法讲授法、直观演示法、练习法、自主學习法、任务學习法敎學环节敎學过程导入The Comparative and S
2、uperlative Degrees of Adjectives and Adverbs(形容词和副词的比较级和最高级)大多数形容词和副词有三个等级: 1、原级,即原形。（没有比较时用原级） 2、比较级,表示“较”或“更一些”。（两者比较时用比较级） 3、最高级,表示“最”的意思。（两者以上用最高级）知识讲解（难点突破）一、形容词和副词比较级和最高级的构成1.一般单音节形容词和副词的比较级多在原形上加-er,最高级加-est,多音节adj在原形前加more,最高级加most原级比较级最高级smallsmallersmallestbeautifulmorebeautifulmostbeautif
3、ulpopularmorepopularmostpopular2.辅音字母加y结尾时去y加ier, 最高级加iest eg. friendly friendlier friendliest3.以不发音的e结尾时比较级加r,最高级加st. eg. fine finer finest4.重读闭音节结尾的词,如末尾是一个辅音字母,双写这个辅音字母,再加-er/est. eg. big bigger biggest5.ly结尾的副词变比较级前面加more, 变最高级前面加mostquickly more quickly most quickly一、形容词和副词比较级和最高级的构成不规则变化原级比较级最
4、高级good/wellbetterbestbad/badly/illworseworstmany/muchmoremostlittlelessleastfarfartherfarthestfurtherfurthest二、形容词和副词的比较级和最高级的用法基本用法1、表示“和一样”,用“as+原级+as”结构。 eg: He likes her as much as he likes his sister.2、 表示“不如”,用“not as/ so+原级+as”结构或“less+原级+than”结构 eg: He does not smoke as/ so heavily as his br
5、other. He smokes less heavily than his brother.3、 表示“比更”,用“比较级+ than”结构。 eg: She sees me more often than she sees her brother.4、 表示“中最”,用“the+形容词的最高级+比较范围”结构,比较范围为短语从句。 eg: This is the best picture in the hall.This is the best picture that he has ever painted.5.副词的最高级用法: v. + (the)+副词的最高级+范围eg. He r
6、uns fastest in his class. He draws best. 6、表示“越来越”,用“比较级+ and +比较级”结构或“more and more + 原级”结构。eg: Things are getting better and better every day. She is becoming more and more beautiful.7、表示“是的几倍”,用“倍数+as+原级+as”结构,或者“倍数+比较级+than”结构。eg: This classroom is three times as big as that one. This classroom
7、is twice bigger than that one. 特殊用法1、形容词的比较级前面一般不加冠词,但表示“两者中较”的时候,要用“the+比较级+of ”。 eg: She is better than she was yesterday. She is the taller of the two girls.2、形容词的最高级前面一定要加定冠词the,而副词的最高级前面可加可不加。 eg: This book is the most difficult that I have ever read. He jumped (the) highest of the three boys.3
8、、比较级前面可以用even(更加),much(得多),far(得多),a littlie(一点),a bit(一点),slightly(些微地),a great deal(大量),a good deal(大量),a lot(大量),still(还,还要)等词语表示不定程度或数量。 eg: I am even less lucky. She is far better than me at writing. 课堂练习（难点巩固）一、Follow ups(随堂练习)1、-Mr Zhou, all of the students in our group, who lives _? -I think
9、 Li Lei does. A. fat B. father C. farthest D. farest2、The Changjiang River is _ than any other river in China. A. shorter B. longer C. shortest D. longest3、Bob never dose his homework _ Mary. He makes lots of mistakes. A. so careful B. as carefully as C. carefully as D. as careful as4、_ she is, _ sh
10、e feels. A. The more busy, the more happy B. The busy, the happy C. Busier, happier D.The busier, the happier5、The weather is getting w_ a_ w_ .(越来越糟糕)二、单项选择。1. Lucy is very short, but she is _ than her sister. A. shorter B. longer C. taller D. older 2. Frank is _ friendly than his brother. A. a little more B. a few more C. much D. a little 3. Sam is _ at Chinese than Jim. A. good B. well C. better D. gooder 小结形容词和副词的比较级和最高级的用法,其中學习了基本用法和特殊用法6