最常用的英语词缀

8. mega-(元音前为meg-) 兆 hertz赫兹 megahertz兆赫 bit比特，字节 megabit兆比特 128 mb
二、表示空间方位的前缀(prefixes indicating spatial position)
1. 上 over-, super-, sur-, over- 在……上 a. 总体的，全面的 --improvement in the management overcome v. 克服 -- the difficulties overflow v. 溢满 The river overflew its bank. overhead a./ad. an – light A plane flew overhead. overlap v. 重叠 overlapping investment overlook v. 忽视 Such mistake is often overlooked. 俯视 overlook the whole city overpass n. 天桥 a pedestrian overpass人行天桥 overall
前缀
一、表示数量的前缀(prefixes indicating figures)
1. mono-(在元音前为mon-) uni-(在元音前为un-):one, single 一，单
arch统治者 monarch n. 君主 monarchy n. 君主制 gam婚姻 monogamy n. 一夫一妻制 logue说话 monologue n.独白 ton声音 monotonous a.单调的 -- life/rhythm graph写 monograph n.专著 oxide氧化物 monoxide n.一氧化物 carbon -poly卖 monopoly n.垄断 monopolize v. 垄断 --the market
sur- 在……上，超 face面 surface 表面 the – of the earth name名 surname 姓 (=family name, last name) pass过 surpass超过 – one’s expectations pass surpass plus加 surplus a. 剩余的 – value剩余价值 n.顺差 trade – 贸易顺差
substitute n. 代替者 a ~ for sb./sth. v. 代替 He substituted for the injured player. subtract v. 减去 Subtract 3 from 9 and you have 6. （加 add; 乘multiply；除divide) suburb n. 郊区 in the ~ of the city (同义词 outskirts，但是搭配的介词不同 on the outskirts of the city)
4. quadri-(元音前为quadr-):four quadrangle 四角形 quadrennial 四年一次的 the quadrennial Olympic Games quarterly 5. deca-: ten deci-: one-tenth decade 十年 three decades The past three decades have witnessed a huge change in Chinese society. decimeter n. 分米 decibel n. 分贝
注： over-还有excessive（“过度的”）意思 overwork v. 劳累过度 The farmer workers are overworked but underpaid. oversleep v. 睡过头 He was late for work because of oversleeping. overemphasize v. 过分强调 The importance of learning English can never be overemphasized. overestimate v. 高估 underestimate v. 低估
dioxide氧化物 dioxide n. 二氧化物 carbon dioxide 二氧化碳 lemma见解，主张 dilemma n.进退两难的窘境 He was faced with the dilemma of whether or not to return to his country. ambival价值 ambivalent a. 心情矛盾的（既爱又恨的） ambivalence n.心情矛盾 She remained ambivalent about her marriage. gu引导 ambiguous a. 模棱两可的 an ambiguous answer ambiguity n. 模棱两可
uniChina Unicom/Mobile/Telecom unify v.使统一 unify a country unification n. 统一 unique a. 独一无二的，独特的(a unique stamp) unity n. 一体 family unity 家庭和睦 form形式—uniform a. 一致的；n. 制服 bricks of uniform size大小一样的砖 police uniform警服 school uniform 校服 lateral边—unilateral 单边的 a unilateral decision 单方面的决定
2. bi-, di-, ambi- ：two cycle 圈，环 bicycle, bicyclist, go cycling, cyclist lateral 边 bilateral agreement/treaty monthly a. 一月一次的，n. 月刊 bimonthly a. 两月一次的，n. 双月刊 lingual语言 bilingual education 双语教育 enn年 biennial conference 两年一次的会议 ann年 biannual 一年两次的 a biannual event gam婚姻 bigamist重婚者
super- 在……上，超过 structure 结构 superstructure上层建筑 vise 看 supervise 监督 superficial a. 肤浅的 I have only a -- knowledge of law. superior n./a. 上级（的）my immediate -- 我的顶头上司 He works well with those -- to him in the company. superiority n. 优越性 – complex优越感 inferiority complex 自卑感 superman n. 超人 supermarket n. superstar n. sonic 音的 supersonic a. 超音速的 a -- plane supernatural a. 超自然的 – forces/powers/events
7. kilo-, milli- (元音前为mill-):one thousand(th) meter 米 kilometer千米，公里 km gram克 kilogram公斤 kg watt 瓦特 kilowatt 千瓦 volt伏特 kilovolt 千伏 calorie卡路里 kilocalorie千卡 milligram 毫克 millimeter 毫米 millennial 千年的 millennium 千年 Many peopBaidu Nhomakorabeae refer to the year 2000 as the Millennium.
under- 在下；不足 underline vt. 在……下面划线 the underlined words underdeveloped 不发达的 ~ countries不发达国家 欠发达国家 less developed countries undergraduate n. 本科生 undergo vt. 经历，遭受 ~ a major operation underlying a. 潜在的 an ~ meaning 内在的含义 undermine vt. 暗中破坏 she tried to ~ our friendship. undertake vt. 承担 ~ the impossible mission underwear n. 内衣，衬衣 underneath prep.在……下面 put your name ~ the address.
3. tri-:three angle角 triangle 三角形 a girl in love triangle with Tom and Jack triangular 三角形的 cycle圈，环 tricycle 三轮车 triple a. 三倍的 triple jump 三级跳 v. 增加三倍 The company tripled its profits last year. lateral边 trilateral 三边的
英语中最常用词缀
Affixes Most Frequently Used in English
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An affix（词缀） is a letter or group of letters, for example ‘un-’ or ‘y’, which is added to either the beginning or the end of a word in order to form a different word . An affix includes prefix (added to the beginning of the word,前缀） and suffix（ added to the end of the word,后缀). When a prefix is added to a word, the word often has a new meaning. For example, unhappy, dishonest, incredible. When a suffix is attached to a word, the word often has a new part of speech（词性）. For example, friendly, quickly.
6. centi-(元音前为cent-)：one hundred(th) grade 级， 度 centigrade百度制，摄氏 pede足 centipede蜈蚣 centimeter 厘米 century percent centennial 百年的 The centennial Olympics was held in Atlanta.
2. 下 sub-, under-, sub-：under subway n.地铁 (英国人用underground) marine 海洋的 submarine n. 潜艇 conscious有意的 subconscious n./a. 潜意识(的) standard标准的 substandard a.低于标准的 (nonstandard a. 不标准的） scribe写 subscribe订阅 ~ to a magazine merge融合 submerge v. 淹没 be submerged by the flood submit vi. 屈服 submit to sb. vt. 提交 submit a report to sb. subordinate a. 下级的；从属的