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英语单词常见前缀后缀常见前缀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,dislikein-,ig-:il,im,ir,incapable,inability,ignoble,impossible,immoral,illegal,irregularne-,n-neither,never,none,non-noesenseneg-neglectun-unable,unemployment2)表示错误的意义male-,mal-:malfunction,maladjustment(失调)mis-:mistake,misleadpseudo-:pseudonym假名),pseudoscienee3)表示反动作的意思de-:defend,demodulation(解调)dis-disarm,disconnectun-unioad,uncover4)表示相反,相互对立意思anti-,ant-contra-,contre-,contro-antiknock(防震),antiforeign,(排外的)anti-,ant-contra-,contre-,contro-contradiction,controflow(逆流)counter-counterreaction,counterbalaneeob-,oc-,of-,op-:object,oppose,occupywith-:withdraw,withstand2.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(弯路)3)circum-,circu-,表示周围,环绕,回转”circumstanee,circuit4)de-,表示在下,向下”desce