形容词、副词的比较级和最高级的变化规律如下: ①单音节形容词或副词后面直接加-er或-est tall—taller—tallest fast—faster—fastest ②以e结尾的单音节形容词或副词直接加-r或-st large—larger—largest nice—nicer—nicest fine-finer-finest ③以-。