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Unit 3-GrammarWhen we compare two people or things,we can use the comparative of adjectives（比较级）.To form the comparative of adjectives,we often add _ to short adjectives and use _ with long adjectives.We often use _ after the comparative of adjectives.-ermorethanWhen we compare more than two people or things,we can use the superlative of adjectives（最高级）.To form the superlative of adjectives,we often add _ to short adjectives and use _ with long adjectives.We usually use _ in front of the superlative of adjectives.-estmosttheSummary总结总结 原形原形比较级比较级最高级最高级talltallertallestnicenicernicestbigbiggerbiggesteasyeasiereasiestclevercleverercleverest单单音音节词节词和多数和多数双音双音节词节词尾尾加加er/est变为变为比比较级较级/最高最高级级Summary总结总结 原形原形比较级比较级最高级最高级interestingmore interestingmost interestingcarefulmore careful most carefulslowlymore slowly most slowly多音多音节词节词和一些双音和一些双音节节在在词词前加前加more/most变为变为比比较级较级/最高最高级级Summary总结总结 原形原形比较级比较级最高级最高级good/wellbetterbestbad/badlyworseworstmany/muchmoremostlittlelessleastold 年长的，老年长的，老的，旧的的，旧的olderoldestold（亲戚关系（亲戚关系中）年长的中）年长的eldereldestfar 远的远的fartherfarthestfar 进进一一步的步的furtherfurthest拓展拓展 1.A is+adj.+er+than B.(两者两者)Jim比比Mike要高。要高。Jim is taller than Mike.2.比较级前面可以比较级前面可以有有程度副词程度副词much,a little,a lot,even等修饰语等修饰语 Jim比比Mike要高很多（高得多）。要高很多（高得多）。Jim is much taller than Mike.3.数量数量+比较级比较级+than Jim比比Mike要高要高10厘米。厘米。Jim is 10cm taller than Mike.4.比较级比较级+and+比较级，表示比较级，表示“越来越越来越”越来越热：越来越热：hotter and hotter 越来越美丽：越来越美丽：more and more beautiful5.the+比较级，比较级，the+比较级比较级 表示表示“越越就越就越”你越努力学习，你就会更好。你越努力学习，你就会更好。The harder you work,the better you will be.1.A is the adj.+est of+人人/in+地点地点.（三者或三者以（三者或三者以上）上）在在里最里最的的 Jim在三班里是最高的男孩。在三班里是最高的男孩。Jim is the tallest boy in Class 3.=Jim is taller than the other boys in Class 3.=Jim is taller than any other boy in Class 3.拓展拓展 2.the+序数词序数词+形容词最高级形容词最高级+名词名词+in/of 表示表示“第几最第几最”Mike在三班里是第二高的男孩。在三班里是第二高的男孩。Mike is the second tallest boy in Class 3.3.one of+the+形容词最高级形容词最高级+名词复名词复数数+in/of 表示表示“最最之一之一”Jim在三班里是最高的男孩之一。在三班里是最高的男孩之一。Jim is one of the tallest boys in Class 3.
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