brave(勇敢的)—bravery(勇敢)
slave(奴隶)—slavery(奴隶身分, 奴隶制度)
?ery
?ese:
China(中国)—Chinese(中国的,)
Japan(日本)—Japanese(日本的)
?ess
actor(男演员)—actress(女演员)
waiter(侍者, 服务员)—waitress(女服务生)
hand(手)—handful(一把, 少数)
?hood
child(孩子, 儿女)—childhood(孩童时期)
man(男人)—manbood(成年男子)
?ics
electron(电子)—electronics(电子器件)
linguist(语言学家)—linguistics(语言学)
?ism
Marx(马克思)—Marxism(马克思主义)
socialist(社会主义者)—socialism(社会主义)
?ist
psychiatry(精神病学)—psychiatrist(精神病医师)
violin(小提琴)—violinist(小提琴演奏者)
?ity,?ty
cruel(残酷的, 悲惨的)—cruelty(残忍, 残酷)
pure(纯的, 纯粹的)—purity(纯净, 纯洁, 纯度)
?ment
move(移动, 迁居)—movement(运动, 动作)
retire(退休, 引退, 退却)—retirement(退休, 引退)
?ness
dark(黑暗, 夜)—darkness(黑暗, 漆黑)
happy(快乐的, 幸福的)—happiness(幸福, 快乐)
?ology
climate(气候, 风土)—climatology(气候学, 风土学)
future(未来, 将来)—futurology(未来学)
?ship
friend(朋友, 助手)—friendship(友谊, 友好)
scholar(学者)—scholarship(奖学金, 学问, 学识)
?sion,?ssion
decide(决定, 判决)—decision(决定, 决心)
expand(使膨胀, 扩张)—expansion(扩充, 开展)
?th
grow(生长, 成长)—growth(生长, 种植)
wide(宽的, 广阔的)—width(宽度)
?ure
close(关, 关闭)—closure(关闭,使终止)
expose(使暴露, 受到, 使曝光,揭露)—exposure(暴露, 揭露, 暴光, 揭发)
(2)动词后缀
?en
deep(深的, 纵深的)—deepen(加深, 深化)
fast(紧的, 牢的)—fasten(扎牢, 扣住)
?ify
class(班级, 阶级)—classify(分类, 分等)
simple(简单的, 简易的)—simplify(单一化, 简单化)
?ize,?ise