as…as的用法
1、此句型用于平级比较，第一个as是副词，第二个as是连词，中间加的是形容词或副词的比较级。例如： This bridge is as long as that one. He runs as fast as Jack. 2、中间如果加名词的话分为两种情况。 （1）加可数名词单数，注意要先加形容词再加不定冠词。如 He is as good a boy as Tom. （2）加可数名词复数，不可数名词只能用many和much修饰，如 I have as many books as you...