1、 形容词、副词的比较级和最高级的构成规则1一般单音节词和少数以 -er,-ow 结尾的双音节词 ,比较级在后面加-er,最高级在后面加-est；（1 ）单音节词如：smallsmallersmallest shortshortershortest （2 ）双音节词如：clevercleverercleverest narrownarrowernarrowest 2以不发音 e 结尾的单音节词,比较在原级后加-r,最高级在原级后加-st；如：largelargerlargest nicenicernicest ableablerablest3重读闭音节（即：辅 音元音辅音）先双写末尾的辅音字母，
2、比较级加-er,最高级加-est ；如：bigbiggerbiggest fatfatterfattest4 辅音字母y”结尾的双音节词, 把 y 改为 i,比较级加-er,最高级加-est；如：easyeasiereasiest heavyheavierheaviest busybusierbusiest happyhappierhappiest5其他双音节词和多音 节词, 比较级在前面加 more,最高级在前面加 most；如：beautifulmore beautifulmost beautifuldifferentmore differentmost different popular
3、more popularmost popular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 the,不表示最高级的含义, 只表示“ 非常“. It is a most important problem. =It is a very important problem. 6 有少数形容词、副词的比 较级和最高级不规则goodbetterbest wellbetterbest badworseworst illworseworst
4、 oldolder/elderoldest/eldest many/muchmoremost littlelessleast 形容词、副词的比较级和最高级的用法1 “A + be +形容词比较级 + than + B” 意思为“A 比 B 更”.如：This tree is taller than that one. 这棵树比那棵树高. 在含有连词 than 的比 较级中,前后的比较对象必须是同一范畴,即同类事物之间的比较.在比较级前面使用 much,表示程度程度“强得多”. 如：A watermelon is much bigger than an apple. very, quite 一般
5、只能修饰原级,不能修 饰比较级. 2 “比较级 + and + 比较级”或“more and more +原级”表示“越来越”如：It becomes warmer and warmer when spring comes. 春天来了,天气 变得越来越暖和了 .The wind became more and more heavily. 风变得越来越大.3含有 or 的选择疑问句中,如果有两者供选择, 前面的形容词要用比较级形式.如：Who is taller,Tim or Tom? 谁更高,Tim 还是 Tom?4. “the +比较级, the+比较级”,表示“越越 ”.The soone
6、r,the better. 越快越好.5. 表示倍数的比较级用法：. A is times the size /height/length/width of B. 如：The new building is three times the height of the old one.这座新楼比那座旧楼高三倍.(新楼是旧楼的四倍高). A is times as big /high/long/wide/large as B.如：Asia is four times as large as Europe.亚洲是欧洲的四倍大.(亚洲比欧洲大三倍). A is times larger /higher
7、/longer/wider than B.如：Our school is twice bigger than yours.我们学校比你们学校大两倍.6.形容词、副词的最高级 形式主要用来表示三者或三者以上人或事物的比 较,表示“ 最”的意思.如：He is the tallest in our class. 他在我们班里是最高的.7.“否定词语+比较级“,“否定 词语+ so as“结构表示最高 级含义. Nothing is so easy as this. =Nothing is easier than this. =This is the easiest thing.8. 比较级与最高级
8、的转换 ： Mike is the most intelligent in his class. Mike is more intelligent than any other student in his class9.修饰比较级和最高级的 词(1）可修饰比较级的词 .a bit, a little, rather, much, far, by far, many, a lot, lots, a great deal, any, still, even 等. (除 by far 外,必须置于比较级形容词或副词的前面. ). 可用表倍数的词或度量名词作修饰语.(2)下列词可修饰最高级：by far, far, much, mostly, almost. This hat is nearly / almost the biggest. 10. 序数词 通常只修饰 最高级. 11.要避免重复使用比 较级. 12.要避免将主语含在比较对象中. 13.要注意冠词的使用, 后有名词的时候, 前面才有可能有名词.
