exscind [ ex- = out 出;scind = to cut 切→]v. cut out; excise 切去，切除 / A tumor was exscinded from his lung. 從他的肺部切除了一個(gè)腫塊。

下面逐一探討ex-的異體ef-與e-的構(gòu)詞特點(diǎn)。

effect [ef-(ex-) = out 出；fect= to make 做→]I v. make out; bring about 產(chǎn)生，招致 / The war effected changes all over the world.那場(chǎng)戰(zhàn)爭(zhēng)使整個(gè)世界都發(fā)生了變化。II n. sth. made to happen; result 結(jié)果 / The effect of the gale was to overturn several boats.刮大風(fēng)的結(jié)果是翻了幾條船。

effective a. 有效的；生效的

effort [ef- (ex-) = out 出;fort = force 力=>“force out 使出力氣”→]n. the use of energy; trying hard 努力;艱難的嘗試 / Climbing a steep hill takes effort. 爬上陡峭的山要花力氣。

effortless a. 不作努力的；不費(fèi)力的，容易的

educe [ e- (ex-) = out of 出;duc = to lead 引導(dǎo)；-e=>“to lead out of 從…引出”→]v. bring out； draw forth 引出；推斷出 / The science teacher's questions educed a discussion. 自然老師提出的問(wèn)題引出了一場(chǎng)討論。

Reduction n. 引出；推斷 

educible a. 可引出的；可推斷的

egress [ e- (ex-) = out 出；gress = going 走→]n. ①going out 外出，出去 / The door was locked and no other egress was possible. 門鎖上了，其他出去的辦法是沒(méi)有的。②a way out; exit出路； 出口 / The egress was plainly marked on the doors of the theatre. 戲院的門上清楚地標(biāo)著出口的記號(hào)。

eject [e-( ex-) = out of 出；ject = to throw扔→]v. ① throw out of 噴射，吐出 / The volcano ejected lava and ashes. 火山噴出巖漿與火山灰。②drive out of; expel 逐出；驅(qū)逐 / The landlord ejected the tenant who did not pay his rent. 地主把沒(méi)有交地租的佃戶趕走了。

ejection n .驅(qū)逐，排斥；噴出，射出