1. 同级比较 两个比较对象程度相同时,用“as+形容词原级+as的结构” 例如: Tom is as tall as his brother. My hair is as long as mine. 在这两种结构中,第一个as是副词,而第二个as是连词;在第二个as的后面接名词、句子或代词的主格(一般不要接代词的宾格).例如: His bedroom is not as big as his sister's. It is not so hot as yesterday. [学生两人一组使用as… as… 及 not as(so) … as…练习同级比较.]追问