词根root（单词意思可能复合这个组合，但这个组合不一定是这个意思：word-》alpha）
sist
tract
fit
act
ten
form
ect
vert
| cide | cut+kill | decide | |
| act | do | activity, interact | |
| fect | do | affect, detect, defect, infect | |
| fact | do | ||
| art | 技巧，人工 | artifact, artificial | |
| chron | time | 时间 | |
| dict | say，分清 | dictate口述，命令，dictionary | |
| cert，cern | separate分清,想 | certain!，concern | |
| sert | join | insert, desert | |
| tain | take拿住 | certain! | |
| con | 共同 | concern | |
| com | 共同together | combine | |
| apt | ability | adapt | |
| celer | quick, speed | accelerate, decelerate | |
| cit | quote,call,引起唤起 | excite | |
| cent | hundred | centimeter, percentage, percent | |
| fer | 状态转移 | offer, defer, differ, infer, transfer, refer | |
| cess | go, | excess, process, access, success | |
| ceed | go | succeed, proceed | |
| cept | take | except, accept, intercept, concept | |
| clar | clear | clarify | |
| claim | cry out ,shout, 呼喊 | alaim, | |
| fal | 错误 | fall | |
| doc | teach | doctor, document | |
| cur | care用心 | curious，secure, cure, accurate | |
| curr | run | current | |
| cre | 增长 | increase, create | |
| dur | 持久 | durability, duration | |
| flex | 弯曲 | flexible | |
| flect | 弯曲，反应 | reflect | |
| step | 后，继父 | stepfather | |
| iso | |||
| ob | 相反;离开，加强 | obsolete | |
| circ, cycl | 圆 | circle, cycle | |
| acid, acri, acrid, acu |
= sour, sharp, 表示“尖, 酸, 锐利 |
||
| centr | 中心 | center， | |