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1、1、无比较时，只能用原级（原形）例如：She is tall.Our school is beautiful.Tom runs fast.I play the piano well.第1页/共8页修饰原级的词 very,quite,pretty,really,too,so,enough等 如：I am pretty healthy.English is so difficult.Mary sings very well.we work really hard.第2页/共8页2第3页/共8页be as+adj.（形容词）+as的用法as.as 意为“和一样”，表示同级的比较。其基本结构为：as+
2、adj.+as1.She is as old as I am.2.Amy is as tall as Peter.3.This film is as interesting as that one.注意：asas 中间用形容词的原级第4页/共8页be as+adj.+as的否定形式为：be not as+adj.+as“前者不如后者”This dictionary is not as useful as that one.Amy is not as tall as Peter.be as+adj.（形容词）+as 的用法These apples are not as good as those
3、 ones.第5页/共8页动词 as+adV.（副词）+as的用法as.as 意为“和一样”，表示同级的比较。中间加一个副词原级。I run as fast as Peter（does）She sings as well as I（do）.3.Tom swims as slowly as Jim（does）.注意：asas 中间用副词的原级第6页/共8页 as+adv.+as的否定形式为：does/do not 动词 as+adv.+as“前者不如后者”动词 as+adv.（副词）+as 的用法I dont run as fast as Peter（does）She doesnt sing as well as I（do）.3.Tom doesnt swim as slowly as Jim（does）.注意：在否定句中第一个as 可以改为so。第7页/共8页感谢您的观看！第8页/共8页