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1、Unit 3Im more outgoing than my sister.Section A(3a3c)单元同步语法精讲精练 形容词比较级的含义形容词有三个等级：原级、比较级和最高级。其中比较级表示“更”，用于两者(人或事物)之间的比较，说明“前者比后者更”。形容词比较级的构成一般在形容词词尾加er。eg：smallsmaller；smartsmarter以字母e结尾的形容词，词尾加r。eg：closecloser；nicenicer以重读闭音节结尾且末尾只有一个辅音字母的形容词，要先双写这个辅音字母，再加er。eg：bigbigger；thinthinner以“辅音字母y”结尾的形容词，先
2、将y变i，再加er。eg：earlyearlier；happyhappier多音节和部分双音节形容词，在其前加more构成比较级。eg：beautifulmore beautiful部分不规则形容词的比较级eg：good/wellbetter；badworsemany/muchmore；littlelessoldolder/elder；farfarther/further形容词比较级的用法形容词的比较级结构为：形容词的比较级than比较对象，前后相比较的两个事物一定要属于同类。而且做比较时，一定要避免自身与自身相比，表示一个范围内两事物比较用“比较级thanany other单数名词”。eg：
3、He is taller than any other student in his class.他比班上任何一个学生的个子都高。as.as.意为“与一样”，其否定形式为“not so/as.as.”，意为“不如怎么样；不与一样”。它们也是一种表达比较的形式，注意as与as之间要用形容词或副词的原级。“the比较级，the比较级”表示“越，越”。eg：The more you read，the more you know.你书读得越多，你知道的就越多。“比较级and比较级”表示“越来越”。eg：Our city is more and more beautiful.我们的城市越来越漂亮了。修饰
4、比较级可用much，a little，even，still，a lot等。【注意】当比较级后有of the two.之类的短语时，比较级前要加定冠词the。二者选择疑问句中，常用句型：Which/When/Whobe形容词比较级，A or B？ 一、写出下列形容词或副词的比较级。1quiet _2interesting _3quickly _4.much_5easy _ 6.wet_7well _ 8.fine_9friendly _10important _quietermore interestingmore quicklymoreeasierwetterbetterfinermore f
5、riendlymore important二、根据句意，用括号中所给单词的适当形式填空。1Tom is as _ (smart) as Sam.2Mike does his homework as _ (careful) as Mark.3Mary is two years _ (old) than I.4Who is much _ (busy)，Mike or Mary?5Its _ (hot) today than it was yesterday.6Of the two girls，I find Lucy the _ (good)smartcarefullyolderbusierhott
6、erbetter三、单项选择。1Mike is _，but his brother Sam is much _.Aheavy；heavierBheavy；heavyCheavier；heavy Dheavier；heavier2Im sorry this coat is not big enough.I want a _ one.AbiggerBbig Csmaller Dsmall3Kay is _ more outgoing than her sister.Avery Btoo Cquite Da little4The _ exercise you take，the fatter you will be.Afew Blittle Cfewer DlessAADD
