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1、形容词、副词的比较等级一、形容词的同级比较：as + 形容词或副词原级 + as 1）在否定句或疑问句中可用so as。例如：He cannot run so/as fast as you. 他没你跑得快。2）当as as 中间有名词时采用以下格式：as +形容词+ a +单数名词/ as + many/much +名词。例如： This is as good an example as the other is. 这个例子和另外一个一样好。 I can carry as much paper as you can. 你能搬多少纸，我也能。3）用表示倍数的词或其他程度副词做修饰语时，放在as的
2、前面。例如： This room is twice as big as that one. 这房间的面积是那间的两倍。 Your room is the same size as mine.你的房间和我的一样大。4）倍数+ as + adj. + as 倍数+ the + of。例如： This bridge is three times as long as that one. 这座桥的长度是那座的三倍。 This bridge is three times the length of that one. Your room is twice as large as mine. 你的房间是我
3、的两倍大。 Your room is twice the size of mine. 二、形容词的比较级：比较级形容词或副词 + than例如：You are taller than I. 你比我高。They lights in your room are brighter than those in mine.你房间的那些灯比我房间里的亮。注意： 1）要避免重复使用比较级。（错）He is more cleverer than his brother.（对）He is more clever than his brother.（对）He is clever than his brother.
4、2）要避免将主语含在比较对象中。（错）China is larger than any country in Asia.（对）China is larger than any other countries in Asia.3）要注意对应句型，遵循前后一致的原则。The population of Shanghai is larger than that of Beijing.It is easier to make a plan than to carry it out.4）要注意定冠词在比较级中的使用。 比较：Which is larger, Canada or Australia?Whi
5、ch is the larger country, Canada or Australia?She is taller than her two sisters.She is the taller of the two sisters.三、形容词的最高级：the + 最高级 + 比较范围 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。例如：The Sahara is the biggest desert in the world. 撒哈拉沙漠是世界上最大的沙漠。形容词most前面没有the，不表示最高级的含义，只表示非常。例如：It is a most important p
6、roblem. =It is a very important problem. 这是个很重要的问题。注意：使用最高级要注意将主语包括在比较范围内。（错）Tom is the tallest of his three brothers.（对）Tom is the tallest of the three brothers.2）下列词可修饰最高级，by far, far, much, mostly, almost。例如：This hat is nearly / almost the biggest. 这帽子差不多是最大的了。注意：a. very可修饰最高级，但位置与much不同。This is
7、the very best.This is much the best. b. 序数词通常只修饰最高级。例如：Africa is the second largest continent.非洲是第二大洲。3）最高级的意义有时可以用比较级表示出来。例如：Mike is the most intelligent in his class. 马克是班上最聪明的。Mike is more intelligent than any other students in his class.4）否定词语+比较级，否定词语+ so as结构也可以表示最高级含义。例如：Nothing is so easy as this. 没比这更简单的了。 =Nothing is easier than this.=This is the easiest thing.
