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1、 Unit5 The world of my dreams By ShirleyJapan is smaller than Australia.Watermelon is bigger than apple Snow White is more beautiful than the queenShanghai is larger than Anyang .比较级句子结构：A + be + 形容词比较级 + than + BFor example：Tom is older than Bill.The tree is taller than the flower.Kate is more beau
2、tiful than Mary.His picture is nicer than hersCheng long is taller than Pan changjiang.Yao Ming is the tallest of the three.世界历史上最高的人，身高达到3.19米 詹世钗Zhan Shichai is the tallest people in the world. The Nile is the longest river in the world.1 尼罗河 全长6750千米，流域面积约287 万平方千米。 2 亚马孙河 全长6436千米，其流域面积 691.5万平方
3、千米。 3 长江 全长6300多千米，年平均流量每 秒31900立方米。 Russia is the largest country in the world.1707.55万平方公里（世界国家和地区第1名；占苏联领土面积的76% ），水域面积占13%，是世界上面积最大的国家。 最高级的句子结构：A+be+the+最高级+范围For example：Russia is the largest county in the world.Lucy is the tallest girl in the class.The Nile is the longest river in the world.t
4、all taller the tallestLi MeiLilyKatebeautifulbeautiful more beautiful the most beautifulfastfasterthe fastestthe strongestbaby TomMr. Blackbigbiggerthe biggest 一、形容词的比较级 形容词比较级在句子中的运用：两 个事物或人的比较用比较级，比较 级后面一般带有单词than。 最高级的用法 表示三者或三者以上（人或事物）的比较 用最高级，最高级的前面一定要加定冠词 the，形容词比较级和最高级的规则变化 1:单音节词 ，在词尾加er构成比较
5、级， 加est构 成最高级。 tall- taller - the tallest longlongerthe longest smallsmallerthe smallest shortshorterthe shortest newnewerthe newest 2:以不发音的e结尾,直接在词的后 面加 r构成比较级,加 st构成最高级nice- nicer the nicest large larger the largest重读闭音节词 ,双写结 尾的辅音字母, 再 加er构成比较级，加est构成最高级 。 hot hotter-the hottest bigbiggerthe bigg
6、estfatfatterthe fattestthinthinnerthe thinnest以辅音字母+y的词, 把y变i加er构成 比较级，把y变i加est构成最高级。 easy- easier the easiest busy busier the busiestheavyheavierthe heaviesthappyhappierthe happiest双音节词多音节词在前加 more构成 比较级，加most构成最高级。 beautiful -more beautiful the most beautiful important -more importantthe most impo
7、rtant形容词比较级和最高级的不规则变化good better- best bad worse- worst much more- most many more- most little less- least 一、写出下列形容词的比较级 old_ young_ tall_ long_ short_strong_ big_ small_fat_ thin_ heavy_ high_ late_early_ cool_￥500 ￥500 The yellow coat is expensive, too.The brown coat is expensive.The brown coat is
8、 as expensive as the yellow one.famousZhou xingchi is as famous as Liu dehua.asasasas之间一定要用形容词或副之间一定要用形容词或副词原形词原形, , 表示表示 “ “和和一样一样 ”not so / as not so / as asas 用于否定句用于否定句, , 表示表示“ “和和不一样不一样”They are not so famous as Zhou jielun二、根据句意填入单词的正确形式 1.My brother is two years _(old) than me. 2. Tom is _(tall) than Jim. 3. Is your sister _(young) than you? Yes, she is 4. Who is_(thin), you or Helen? Helen is. 5. Whose pencil-box is _(big), yours or hers? Hers is 6Which is _(heavy), the elephant or the pig? 7Who gets up _(early), Tim or Tom? older taller youngerthinner biggerheavier earlier
