famous,more famous,most famous
useful,more useful,most useful
outgoing,more outgoing,most outgoing
traditional,more traditional,most traditional
few,fewer,fewest
形容词的比较级和最高级的变化规则如下：
(1)大多数单元音节的形容词的比较级是在原形的后面加上-er,比如：small-smaller,large-larger.
(2)在重读闭音节中,辅音加元音的单词中,双写辅音字母,然后加-er,例如：hot-hotter,big-bigger.
(3)有些以-y结尾的双音节形容词,如果-y前面是一个辅音字母,变比较级的时候就要把-y变成-I,然后再加-er.例如：pretty-prettier.
(4)在多音节当中,用more+形容词原形.
(5)不规则变化：little-less-least,manymuch-more-most,wellgood-better-best,bad-worse-worst,far-rartherfurther-farthestfurthest,difficult-more difficult-the most difficult,
(6)对于最高级,它是在形容词原形加上-est,同时在最高级形容词之前要加定冠词”the”.例如：This is the largest in the shop.I am the youngest in the class.He is the tallest policeman I have ever seen.
most useful
more enjoyable(楼主打错了吧?)