一、常见的前缀
1. 表示否定意义的前缀
1) 纯否定前缀
a-, an-, asymmetryanhydrous
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
mis-, mistake, mislead
pseudo-, pseudonym, pseudoscience
3)表示反动作的意思
de-, defend, demodulation
dis-, disarm, disconnect
un-, unload, uncover
4)表示相反,相互对立意思
anti-, ant- antiknock, antiforeign,
contra-, contre-, contro-, contradiction, controflow
counter-, counterreaction, counterbalance
ob-, oc-, of-, op-, object, oppose, occupy
with-, withdraw, withstand
2. 表示空间位置,方向关系的前缀
1)a- 表示在之上,向
aboard, aside,
2)by- 表示附近,邻近,边侧
bypath, bypass
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