词根:neg = to deny
来自拉丁语的neg意为to deny。
同源词:
1. renegade(完全否定或不相信的人 re(=intensive) + neg(=deny))
n.叛徒,变节者;改变仰者;脱党分子
adj.背叛的,变节的;叛教的;脱党的
When the senator changed parties,he was accused of being a renegade.那个参议员改入另一党时被指责为叛徒。
2. abnegation
n.克制;否定;放弃 *ab(=away)
self-abnegation 克已;自我牺牲
3. negate
v.否定;否认;使无效;取消
4. negation
n.否定,否认
sign of negation 否认的表示
5. negative
adj.(话语、回答)否定的;负面的,消极的;(照片)底片的
n.否定的话;负数;(照片的)底片 v.驳斥;拒绝
negative criticism / praise / virtue 负面的批评/只是不说不好/(未行善也未作恶)消极的美德
Experiments negative his theory 实验驳斥了他的理论
6. negotiate
v.协商,协议;通过,超过;兑现(支票、彩票等);转让
negotiation n.协商,交涉;流通
negotiator n.协商者,交涉者;转让者
difficult corner for a large car to negotiate 大型汽车难以通过的拐角
7. negotiable
adj.可以协商、协定的;(路、江河等)可以通行的;可以转让、流通的
negotiable securities/instruments 流通证卷/可以转让的文书
前缀:un-
1、不
unreal 不真实的
uncomfortable 不舒服的
unclear 不清楚的
unfriendly 不友好的
unhappy 不快乐的
unequal 不平等的
unwelcome 不受欢迎的
unfortunate 不幸的
unclean 不洁的
uneconomic 不经济的
unkind 不和善的
unchangeable 不能改变的
2、无
unconditional 无条件的
unmanned 无人驾驶的
unsystematic 无系统的
unambitious 无野心的
unlimited 无限的
unaccented 无重音的
unfathered 无父的
unbodied 无形体的
unbounded 无边的
unaccompanied 无伴侣的
untitled 无标题的
unexampled 无先例的
3、非
unjust 非正义的
unartistic 非艺术的
unofficial 非官方的
unspecialized 非专门化的
unartificial 非人工的
unworldly 非尘世的
unsoldierly 非军人的
undesigned 非预谋的
unalloyed 非合金的
unprofessional 非职业性的
unorthodox 非正统的
unintentional 非故意的
4、未
uncorrected 未改正的
unchanged 未改变的
undecided 未定的
unawaked 未醒的
unfinished 未完成的
uncivilized 未开化的
uneducated 未受教育的
unripe 未熟的
uncut 未割的
uninvited 未经邀请的
uncoloured 未染色的
undeclared 未经宣布的
5、相反动作、取消、除去
unlock 开锁
untie 解开
unbind 解开,释放
unbutton 解开钮扣
uncap 脱帽
uncover 揭开盖子
undo 取消,解开
undress (使)脱衣服
6、由...中弄出
untomb 从墓中掘出
unearth 由地下挖出
uncase 从盒中取出
unhouse 把...赶出屋外
uncage 放...出笼
unbosom 吐露(心事)
词根词缀:ad-
【来源及含义】Latin: prefix; to, toward, a direction toward, addition to, near, at; and changes to: ac-, af-, ag-, al-, an-, ap-, aq-, ar-, as-, at- when ad- is combined with certain words that begin with the letters c, f, g, l, n, p, q, r, s, and t
【相关描述】The form ad- appears in this form before a vowel and before the consonants d, h, j, m, and v. It is simplified to a- before sc, sp and st.
Before c, f, g, l, n, p, q, r, s, and t; ad- is changed to ac-, af-, ag-, al-, an-, ap-, aq-, ar-, as-, and at-.
In other words, the d of ad usually changes into the same letter as the first letter of the following root or word when it is a consonant: ad-fix becomes affix, and ad-sign becomes assign; therefore, making a double consonant.
Another example includes: attract as with ad-tract (drawn towards); so it has a double t. On the other hand when ad- precedes a vowel, as with adapt, it is simply ad-apt, with one d. For the same reason, there is only one d in adore and adumbrate, because ad- has combined with orare and umbra each of which starts with a vowel.
So, remember: since these Latin words begin with vowels and not consonants, the d of ad does not double as shown in the previous examples.
【同源单词】a capite ad calcem, Ab ovo usque ad mala, Ab uno ad omnes, Abiit ad majores, abjure, accede
词根词缀:meta-, met-, meth-
【来源及含义】Greek: after, behind, beyond; changed in form, altered; higher [used to designate a higher degree of a branch of science]
【同源单词】acrometagenesis, allochemical metamorphism, atmometamorphism, brachymetapody, digitometatarsal, ectrometacarpia