中小学教育资源及组卷应用平台 人教版 八下 UNIT 4 The wonders of nature.Grammar Focus 语法专题精讲精练 形容词副词的比较等级 一、原级（同级比较） 含义：表示两者“和……一样”或“不如……一样”。 结构： 肯定：as + 原级 + as（和……一样） 否定：not so/as + 原级 + as（不如……一样） 修饰词：very、so、quite等。 例句：Our school is not so large as theirs.（我们学校不如他们学校大。） 二、比较级（两者比较） 含义：表示两者间“更……”。 结构： 基本：比较级 + than 渐变：比较级 + and + 比较级（越来越……） 条件：the + 比较级，the + 比较级（越……，越……） 修饰词：much、a little、even等。 例句：The more careful you are, the fewer mistakes you will make.（你越细心，犯错越少。） 三、最高级（三者及以上比较） 含义：表示三者及以上中“最……”。 结构： 基本：the + 最高级 + 范围短语/从句 固定句型1：one of the + 最高级 + 可数名词复数（……是最……之一） 固定句型2：the + 序数词 + 最高级（第几最……的） 例句：The Yellow River is the second longest river in China.（黄河是中国第二长河。） 语法专题精练 I. 单项选择（10题） This skirt is _____ than that one, so I’ll take the cheaper one. A. expensive B. more expensive C. most expensive D. the most expensive —How do you like the two books —I think the first one is _____ than the second. A. interesting B. more interesting C. the most interesting D. less interesting The air in the countryside is _____ than that in the city. A. fresh B. fresher C. freshest D. the freshest —Who runs _____ in your class —Li Ming. He can run 100 meters in 12 seconds. A. fast B. faster C. fastest D. the fastest _____ you work, _____ results you will get. A. The harder; better B. Harder; the better C. The harder; the better D. Harder; better Technology is making people _____ than before by doing them harm. A. lazy B. lazier C. laziest D. the laziest Lingling is one of _____ students in my class. She is always ready to offer help. A. helpful B. more helpful C. the least helpful D. the most helpful —Can you teach me how to improve spoken English —The more you practise, _____ it becomes. A. the better B. the best C. the worse D. the worst —Which kind of movies do you prefer, action movies or comedies —I like action movies _____. A. well B. better C. the better D. the best With the teacher's help, Li Lei does his homework as _____ as others. A. more careful B. carefully C. careful D. more carefully II. 按要求完成下列各题 John plays basketball best of the boys in his class.（改为同义句） John plays basketball _____ than _____ _____ boy in his class. My brother is 14 years old. My cousin is 12 years old.（合并为一句） My brother is _____ _____ my cousin. That is one of the most popular books.（改为反义句） That is one of _____ _____ popular books. Simon is shorter than his brother.（改为同义句） Simon isn't _____ _____ _____ his brother. Lisa is the most careful student in my class.（改为同义句） Lisa is _____ _____ than any _____ student in my class. This river is 500km long. That river is 400km long.（合并为一句） This river is _____ _____ than ... ...
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