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1、(1).表示两者在某方面程度相同时，用as+adj/adv原级+as +比较对象和一样,This book is as interesting as that one. 这本书和那本书一样有趣。 She sings as well as Han Meimei. 她唱得和韩梅梅一样好。,(2)表示某人或者某物在某方面不如另一个人或者另一物时，用not so/as+adj/adv原级+as +比较对象，和不一样，不如。可以和“比较级+than”进行转换,The classroom is not so( as) clean as usual. 教室不像平常一样干净。 The classroom is
2、 dirtier than usual. He doesnt get up so/as early as his father. 他起床不如他的父亲早。 He gets up later than his father.,Analysis of sentence structure,This book is as interesting as that one. 主语+be动词+as+adj+as+比较对象,She sings as well as Han Meimei. 主语+行为动词+as+adv+as+比较对象,Exercises,他和他的朋友一样勇敢。（as brave as） He
3、is as brave as his friends. 他不如他的朋友勇敢 He isnt as brave as his friends. His friends are braver than he.,他数学学得和Lucy一样差。（as badly as) He learns math as badly as Lucy. 他数学学得不和Lucy一样差。 He doesnt learns math as badly as Lucy. He learns math worse than Lucy.,重庆和日本一样大。（large） Chongqing is as large as Japan.
4、 重庆不如日本大。（large） Chongqing isnt as large as Japan. Chongqing is smaller than japan.,(3)as . as”结构中还可以用倍数、分数、百分数和half, a quarter等来表示等同的程度。,你只有你弟弟一半聪明。 You are half as clever as your brother. 北京有我的家乡10个大。 Beijing is ten times as big as my hometown. Lucy 的年龄是Helen的三分之一。 Lucy is one third as old as Hele
5、n.,在as . as”结构中，第二个as后接人称代词时，可用主格，也可用宾格。一般来说，正式文体用主格，非正式文体用宾格，意思完全一样。,I think I am as clever as they / them， 我认为我和他们一样聪明。 I myself felt as well as him (he did). 我本人的感觉和他的(感觉)一样好。 She works as hard as me (= as hard as I do). 她像我一样干活卖力。,The computers made in China are as good as_(that /those) made in
6、the U.S.A. The food in Chongqing is hotter than _ （that /those）in Beijing. The weather in japan isnt as good as _ （that /those）in England. 注：those用于代替前面提到的可数名词复数，以避免重复，that则代替单数可数名词和不可数名词。,those,that,that,(4)当as.as与表示重量、数量、时间、距离、价格等的计量名词连用时.往往并不表示比较。而是构成一个形容词组.意为“重达多达高达等,The river is as deep as 10 menters. 这条河深达10米。 The playground is as long as 200 meters. 这个球场长达200米。 This stone is as heavy as 10 tons. 这块石头重达10吨。,