英语中各种词性的转换
词性转换类型有：
(1)v.-n.动词转化为名词,
post-postage mail-mail
weigh-weight advise-advice
(2)v.-n.-a.动词转化成名词-形容词
act-actor / actress-active
change-change-changeable
(3) v.-a.-ad.-n.动词转化成形容词,副词,名词
fill-full
need-necessary-necessarily
interest(v./ n.) interested /interesting
(4)n.a.n.a.名词转化为形容词
person personal ( 个人的; 私人的 )
fun funny
(5)n.pl.n.pl.名词转化为名词复数
gentleman gentlemen human humans
（6)a.ad.a.ad.形容词转化为副词
possible possibly probable probably
(7)a.ad.n.形容词转化为副词,名词
true truly truth
lucky luckily luck
(8)原级 比较级 最高级
far farther / further farthest / furthest
little less least
更详细的看看这网址里的吧,有很多词的转化和分类：
http://cache.baidu.com/c?word=%B4%CA%D0%D4%3B%D7%AA%BB%BB&url=http%3A//mh3z%2Eedu%2Esh%2Ecn/jsupload/kejian/20051026135411%2Edoc&b=0&a=41&user=baidu