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课件网) Unit 3 Shopping Less is more. 少即是多。 Language Practice & Vocabulary Learning objectives knowledge objectives ability objectives emotional objectives To master the basic structure and changing rules of the comparative and superlative levels . Through the grammar knowledge enhances the pragmatic ability. To Form good study habits. Comparative and superlative vocabulary 1. 2. Contents 3. Homework 比较级和最高级 Part 1 Comparative and superlative review Do you have a larger size It includes the most useful words for the workplace. The new edition adds as many as 1 000 new words. The dictionary builds your vocabulary better than ever before. I love the example sentences most. 读课文中的句子，注意斜体单词 Grammar 比较级与最高级 形容词、副词的三个级别 原级：形容词的原级形式就是词典中出现的形容词的原形。 例如: poor tall great glad bad 比较级：用来比较两个或多个事物之间的相对关系，表示”前者比后者更...” 一般规则是在原级后面加上“-er”。例如，“tall”的比较级是“taller”。 最高级是用来表示一个事物在三个或更多的事物中是最高的或最强的。表示”...最...”一般规则是在原级后面加上“-est”例如，“tall”最高级是“tallest”。 Good,better,best, never let it rest, till good is better, and better is best. Grammar 比较级与最高级 比较级和最高级的变化规则 1.词尾变化 构成 原级 比较级 最高级 单音节和少数双音节单词 一般词尾加-er，-est tall long taller longer tallest longest 以字母e结尾的形容词或副词,直接加-r,-st nice large nicer larger nicest largest 以重读闭音节结尾的形容词或副词,如末尾只有一个辅音字母,双写该字母,再加-er,-est big hot thin bigger hotter thinner biggest hottest thinnest 以“辅音字母+y”结尾的形容词或副词，把y变为i，再加-er,est busy early busier earlier busiest earliest 祈使句：用于表达命令、请求、劝告、警告、禁止等的句子。 Grammar 比较级与最高级 2.词前变化 部分双音节与多音节词的比较级最高级构成 部分双音节与多音节的词加more/most构成比较级/最高级 beautiful，more beautiful， most beautiful important ，more important，most important 记住两个特殊的词 clever， cleverer ， cleverest 或者 more clever ，most clever often ， oftener，oftenest 或者 more often ，most often 3.不规则形容词的比较级最高级 Grammar 比较级与最高级 口诀：两 多 好 坏 一老 少 远 原 级 比 较 级 最 高 级 many / much good / well ill / bad / badly old little far more most better best worse worst older / elder oldest / eldest less least farther / further farthest / furthest more more difficult bigger heavier cheaper more beautiful faster cleverer higher finer later more interesting 说出下列形容词的比较级 1. many _____ 2. difficult_____ 3. big _____ 4. heavy _____ 5. cheap _____ 6. beautiful _____ 7.high _____ 8.clever _____ 9.fine _____ 10.late _____ 11.fast _____ 12.interesting _____ more more difficult bigger heavier cheaper more beautiful higher cleverer finer later faster more interesting 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 ... ...
