as + 形容词/副词 + as ... as + 形容词+ a + 单数可数名词 + as He is as strong as his brother. He runs as fast as his brother. He is as clever a student as his brotheras +形容词/副词原形as 和. as soon as 一 什么什么 就中间加形容词原型 as+形容词/副词原形as 和.一样 这要看他前面的词 前面是动词就用副词的原级来修饰