un-1
1(added to adjectives, participles, and their derivatives) denoting the absence of a quality or state; not
用于形容词、分词及其派生词前]表示“否”,“非”
unabashed.不害臊的; 公然的
unacademic.
unrepeatable.un-2
4 added to verbs 动词前缀 denoting the reversal or cancellation of an action or state 表示“做相反的动作”或“取消”
untie.松开, 解开
unsettle.扰乱, 使不安宁
in-1
1(added to adjectives) not 形容词前]表示"不"
infertile.不能生育的;贫瘠的
inapt.不恰当的;不熟练的
2(added to nouns) without; a lack of 加在名词前]表示"无","缺"
inappreciation.不欣赏,不正确评价
in-2
3 in; into; towards; within 表示"在里","入内","朝","内"
induce.引诱, 劝导
influx.大量涌入
inborn.天生的, 先天的, 固有的
dis-
1 expressing negation 表示“否定”
disadvantage.
2 denoting reversal or absence of an action or state 表示“相反”,“缺乏”
diseconomy.
disaffirm.
3 denoting removal of something 表示“去除”
disbud.摘去嫩芽
disafforest.砍伐森林
4 denoting separation. 表示“分离”
discarnate.无形的,脱离肉体的
5 denoting expulsion. 表示“逐出”
disbar.取消律师出庭的资格
6 expressing completeness or intensification of an unpleasant or unattractive action 表示“完全地”
disgruntled.不满的, 不高兴的
这种词的前缀有很多,自己背单词的时候多总结一下就行.不用死记硬背.祝学习进步!