常见的词根
1) aer, ar, 含义是空气，大气 aeroplane, aerial,
2) ag, act, ig, 含义是做，动作 active, agent, reaction,
3) alt, 含义是高， altitude,
4) alter, altern, altr, 含义是其它，变更 alternate,
5) bio, bi, bion, 含义是生物，生命 biology, bionics
6) brev, bri, brief, 含义是短 brief, abbreviation, abridge
7) cap, capt, cept, cip, 含义是取，获 capture, except, concept, capacity
8) ced, ceed, cess, 含义是行，让步 proceed, succeed, excess
9) centr, centr, 含义是中心 concentrate, eccentric
10) clain, clam, 含义是呼喊 claim, proclaim, exclaim
11) clos, clud, 含义是闭合 conclude, enclose, include
12) col, cult, 含义是耕耘 colony, cultivate, agriculture
13) cor, cord, 含义是心 cordial, record, accord
14) curr, cur, cour, 含义是跑，动作 current, occur, concurrence
15) dic, dict, 含义是说，示 dictate, edit, indicate, predict
16) doc, doct, 含义是教 doctor, document.nbsp
17) duc, duct含义是引导，传导 introduce, produce, conduct, deduct
18) fact, fac, fect, dic, dit, 含义是做，创造 factory, effect, profit, faculty, perfect
19) fend, fens, 含义是打，击 defence, offence
20) fer, 含义是搬运，移转 ferry, transfer, defer
21) fin, finit, 含义是终，极 final, finish, confine
22) firm, 含义是坚固 firm, confirm, affirm
23) fix, 含义是固定 prefix, affix
24) flect, flex, 含义是弯曲 flexible, reflex
25) flor, flour, flower, 含义是花 flower, flourish
26) form, 含义是形 uniform, formula, transform, reform, deform
27) forc, fort, 含义是力，强度 force, enforce, effort
28) gen, genit, 含义是生产，发生 generate, generation
29) gram, graph, 含义是书写，记录 telegram, diagram, photograph
30) grad, gress, gred, gree, 含义是步，阶段 gradually, degree, progress
31) hab, habit, hibit, 含义是保持，住 inhabit, exhibit, prohibit
32) her, hes, 含义是粘附 adhere, cohesion
33) ject, jet, 含义是抛射 project, inject
34) jour, 含义是日，一天 journal, journey, adjourn
35) jug, junct, 含义是结合，连合 conjunction, junction
36) labour, labor, 含义是劳动，工作 labourer, elaborate, collaborate
37) lect, leg, lig, 含义是挑选，采集 collect, select, lecture
38) lif, liv, 含义是生活，生存 life, alive, live
39) loc, 含义是场所，位置 location, dislocate
40) long, leng, ling, 含义是长的 length, prolong, linger
41) loqu, locut, 含义是说话 colloquial, eloquent,
42) mand, mend, 含义是命令 command, demand, recommend
43) man, manu, 含义是手，手法 manage, manual
44) memor, menber, 含义是记忆 memory, remember, memorial
45) mind, ment, 含义是心 mind, remind, mental
46) merc, merch, 含义是贸易 commerce, merchant