1.表示否定意义的前缀

1)纯否定前缀

a-, an-, asymmetry(不对称)anhydrous(无水的)

dis- dishonest, dislike

in-, ig-, il, im, ir, incapable, inability, ignoble, impossible, immoral, illegal, irregular

ne-, n-, none, neither, never

non-, noesense

neg-, neglect

un- unable, unemployment

2)表示错误的意义

male-, mal-, malfunction, maladjustment(失调)

mis-, mistake, mislead

pseudo-, pseudonym(假名), pseudoscience

3)表示反动作的意思英语专业四级考试

de-, defend, demodulation(解调)

dis-, disarm, disconnect

un-, unload, uncover

4)表示相反，相互对立意思

anti-, ant- antiknock( 防震), antiforeign,(排外的)

contra-, contre-, contro-, contradiction, controflow(逆流)

counter-, counterreaction, counterbalance

ob-, oc-, of-, op-, object, oppose, occupy

with-, withdraw, withstand