. . jz* 英语构词法中的派生法 派生法：在词根加前缀或在词根后面加后缀构成一个与原单词意义相近或截然相反的新词叫作派生法。 一、前缀前缀一般改变单词的意义，不改变词性〔除少数前缀外〕；后缀一般改变词类，而不引起词义的变化。 (1) 表示否认意义的前缀常用的有： dis-, il-, im-, in-, ir-, mis-, non-, un- 。 disable disadvantage disagree disappear disapprove disclose discolour disconnect discontinuous discontinue discount discourage disorder illegal impossible inaccurate inactive inadaptable inapplicable inconstant inconvenient incredible incurable independent ineffective informal invisible irregular irremovable irrespective irresponsible misfortune misguide midinterpret mislead misread mistrust misunderstand misuse . . jz* nonmetal noncooperation noninvolvement unable unacceptable unaware unbalance unbreakable uncertain unchangeable unfortable undecided unemployed undetermined undeveloped unearth uneconomical unfold unpack untie (2) 表示其他意义的前缀常用的有： a.前缀 anti anti-fascist anti-gas anti-imperialist anti-Japanese War b.前缀auto autobiography autography c.前缀bi- bicentury bilingual d.前缀co co-operation coauthor coheir e.前缀de deform degrade devalue f.前缀 en- em enable encourage endanger enlarge enrich embitter g.前缀ex ex-soldier ex-girlfriend ex-wife h.前缀mid- midday midnight midterm mid-aged i. 前缀multi- multiform multilingual multimedia multipurpose j.21. 前缀 over- overcrowded overwork overload overproduce overlook overe k. 22.前缀pre- . . jz* prewar prehistoric prepay precondition l.前缀re- rewrite review recycle m.前缀 vice- vice-chairman vice-governor vice-premier vice-president 二、后缀后缀通常会改变单词的词性，构成意义相近的其他词性；少数后缀还会改变词义，变为与原来词义相反的新词。 (1)构成名词的后缀常用的有： a、后缀 -age，构成抽象名词 marriage percentage shortage storage b.后缀al- 构成抽...
