雅思分类词汇表之常用英语单词词根

雅思考试主要是通过对考生听、说、读、写四个方面英语能力的考核，综合测评考生的英语沟通运用能力，实现“沟通为本”的考试理念。对于雅思考生来说，也有很多考试难点和政策盲区需要帮助解答。今天雅思无忧网小编准备了雅思分类词汇表之常用英语单词词根，希望通过文章来解决雅思考生这方面的疑难问题，敬请关注。

1) dis(not, the opposite of) disadvantage, dislike, disagree, disappear, disarm, disaster, disastrous, disappoint, disable, disability, discharge, disclose, discount, discourage, discover, discovery, discrepancy, disease, disgrace, disguise, disgust, dishonor, dishonest, dislike, di*ay, disorder, dispatch, disperse, displace, displacement, displease, disregard, dissatisfy, distort , distract, disintegrate, isparage, dispassion, disproportionate

2) in- (not, in, into) inability, incorrect, inability, incapable, indirect, inhuman, injustice, informal, inside, include, inclusive, income, increase, increasingly, incredible, indefinite, independence, independent, indifferent, indirect, indispensable, individual, indoor, inertia , inevitable, infamous , infinite, inhabit , inhabitant, inherent , inject, inland , inlet , inner, innocent, innumerable , input, inquire, inquiry, insane, insensitive, insert, inside, insight, insist, inspect, inspiration , inspire, install, installation, installment , instance, instant, instinct, insulate , intense, interior, internal, into, intrinsic, invade, invalid , invaluable , invariably , invasion, invert , investigate, invisible, involve, inward, incomplete, indecisive, inedible, inept, inevitably, infection, infirm, injection, innate, insatiable, insecurity, insider, insidious

3) im- (not, in, into) impossible, imbalance, immature, immoral, impatient, implicit , impress, impression, import, immigrate, imprison, immerse

4) il- (not) illegal, illiterate, illogical ir- (not) irregular, irresponsible, irrespective

5) un- (not) unable, uncover, undo, undoubtedly, undress , uneasy, unemployment , unexpected, unfold , unfortunately, unimportant, unlike, unload, unusual, unaware, enlightened, unparalleled, unsustainable,

6) non- (not) non*oker, nonexistence, non-cooperation, nonstop, nonmetal, nonresident, nonsense, nonfundamentalist, nonspecialist

7) mis- (wrong, wrongly) mislead, misspell, misstep, misfortune, misuse, misguided, misinformation

8) de- (showing the opposite, to remove, to reduce) deform, deface, demobilize, destruction, deforest, denationalize, depress, depression, decode, decrease, degenerate , degrade , descend, descendant , descent

9) pre- (before, in advance) prefix, pre-historic, precaution, precede , preceding, preclude , predecessor , predict, predominant , preface, prejudice, preliminary, premature , premier , premise , premium , preparation, prepare, prepay, preside , president, presumably, presume , pretext , prevail, prevent, previous, prewar, preconception, prediction, prescientific, presumptively

10) ante-, (before, in advance) anteroom, ante-Christian, antemeridian, anticipate, antique

11) fore- (in advance, before, in or at the front) forearm, forehead, foreman, foretell , foresee , forefather , foreleg, forerunner , fore , foremost, forecast, forewarn

12) ex- (out, out of, former) ex-minister, ex-president, ex-Soviet Union, ex-wife, export, exclude, exclusive, excursion, exhibit, exile , exit, exotic , expand, expansion, expedition , expel , expend , expenditure , expense, explode, explosion, explosive, expose, exposition , exposure, express, expression, extend, extension, extensive, exterior, external, extinct, extra, extract

13) post- (later than, after) postgraduate, postwar, postmeridian, postpone, postscript

14) sub- (under, below, less important) sub, subject, subway, subtitle, subdivide, submarine , sub-zero, submerge, submit, subordinate , subscribe , subsection, subsequent, subsidiary , subsidy , substance, substantial, substitute, subtract, suburb, subconsciously, subtly

15) infra- (below in a range, beyond) infrastructure , infrared

16) re- (again, back to a former state) react, reaction, recall, recede , receipt, recipient , reclaim , recognize, recognition, record, recorder, recover, recovery, recreation, recur , recycle , redundant , reflect, reflection, reflexion, reform, refrain , refresh, refreshment , refund , refute , reinforce, reject, remember, remind, removal, remove, renaissance , renew, repay , repeat, repeatedly, repel , repetition, replace, replacement, represent, representative, repression , reproduce, respect, respond, response, responsibility, responsible, restore, resume, return, reunion , revise, revive

17) co-, col-, com-, con-, cor- (with together) co-existence, cooperative , co-author, coalition , coherent , coincide , coincidence , collaboration , colleague, collide , collision, collocation, compassion, compassionate, concentric, confederation, conjoin, coordinate, correlate, correlation, correspond

18) inter- (between, among) interchange, interchangeable, interdependent, interpersonal, interview, interact , interaction, intercourse , interface , interfere, interference, Internet, interrupt, interval, intervene

19) macro- (large) macroeconomics , macroco* , macrostructure

20) micro- (extremely *all) microcomputer, microeconomics , microscope, microphone, microsurgery, microelectronics, microbiologist

21) super- (greater or more than) super, supermarket, supersonic , superman, superpower, supernatural, supervise , superb, superficial, superintendent , superior, superiority , supreme, supersystem

22) sur- (more than, beyond) surplus, surtax, surface, surpass , surround, survival, survive, suspect

23) ultra- (beyond, very, too) ultramodern, ultrasound, ultra-violet

24) auto- (of or by oneself) auto, autocritici*, autoland, automobile, automation , automatic, autobiography , autonomous , autonomy

25) mal- (bad, badly) malfunction, maltreat , malnutrition , malpractice

26) tele- (at or over a long distance, by or for television) telegram, television, telegraph, telephone, telecommunications , telescope, telescreen, teleswitch, televise

28) semi-, hemi- (half) semicircle, semiconductor, semi-colony , semifinal, hemisphere

29) uni-, mono- (one) uniform, unify , union, unique, unit, unite, unity, universe, universal, university, monologue , monoplane, monopoly , monotone, monotonous , carbon monoxide

30) bi-, di- (two) biweekly, bicycle, bilateral , billion, bilingual, dialogue, carbon dioxide

31) tri- (three) tricycle , triangle, triangular, trilogy , triple, trigonometry

32) quadri-, quadru- (four) quadruple, quadrangle

33) penta- (five) pentagon, Pentagon, Pentium

34) hexa- (six) hexagon, hexangular mill- (thousand) millennium, millimeter

35) sept- (seven) September, Sept-Wolves nona- (nine) nonagon, November

36) octa- (eight) octagon, octave, octopus, October 38) deci-, deca- (ten) decade, decimal

39) centi- (hundredth part) centigrade, centimeter, centipede, century

40) kilo- (thousand) kilo, kilometer, kilogram (me), kilowatt

42) multi- (many) multipurpose, multinational, multiple, multiply, multitude

43)counter-,anti-,contra- (opposite, against counteract, counterattack, counterclockwise, counterrevolutionary, antibiotic, antigravity, antimatter, antiwar, antinuclear, contradict , contradiction, contramissile, contranatural, contrary, contrast, anticonsumeri*

44) mini- (*allest, short) minibus, miniskirt, minimum, minister, ministry, minor, minority, minute

45) max- (greatest) maximum, maximal, maximize

46) out- (outside, beyond) outdo, outwit, outlive, outnumber, outdoor, outstanding, outskirts , outward, outcome, outer, outing , outline, outlook, output, outrage , outside

47) over- (too much, above, additional) overwork, overuse, overtake, overpass , overthrow , overturn , overall, overdue , overhead, overhear , overlook, overseas, overtime

48) trans- (across, on or to the other side of) transaction , transatlantic, transcend , transfer, transform, transistor , transit , transition , translate, translation, tran*ission, tran*it, tran*itter, transparent, transplant, transport, transportation

49) under- (too little, below) underdevelop, underdevelopment, underestimate, undergraduate, underground, underlie , underline, undersea, underlying , undermine , underneath, underwear

50) neo- (new) neo-Nazi*, neolithic

51) be- (cause to be or have) befriend, belittle

52) bio- (life) biology, biography , autobiography, antibiotic, biochemistry, biosphere, biomedical

53) en- em- (cause to become, put into the stated condition) embody, empower, endanger, enlarge, enrich, encompass, enthrone, entrench

54) extra- (outside, beyond) extracurricular, extraordinary

55) mid- (middle) midday, midnight

56) poly- (many) polycentric, polydirectional, polysyllabic

57) pseudo- (not real, false) pseudomemory, pseudonym, pseudoscience

58) thermo- (heat) thermochemistry, thermometer

59) vice- (next in rank below) vice-chairman, vice-president

60) aero- (air) aerial , aeroplane, aeronautics, aerospace

61) cross- (across, going between the stated things and joining them) cross-country, cros*reed

62) intra- (inside, within; into) intracity, intra-department, intranet

63) pro- (in favor of, supporting) pro-America, pro-abortion

64) self- self-employed, self-taught

65) step- (not by birth but through a parent who has remarried) stepmother, stepchildren

(编辑：罗伟)

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