late - later - latest
large - larger - largest
happy - happier - happiest
lazy - lazier - laziest
busy - busier - busiest
lucky - luckier - luckiest
big - bigger - biggest
fat - fatter - fattest
thin - thinner - thinnest
wet - wetter - wettest
beautiful important careful expensive difficult delicious 这些都是比较级前面加more 最高级前面加most