elect [e-( ex-) = out of 出；lect = to choose 選=>“to choose out of 從…中選出來”→]v. choose by voting選舉；推選/ Americans elect a President every four years. 美國(guó)人每 4 年選一次總統(tǒng)。

election n. 選舉；當(dāng)選 

elective a. 由選舉產(chǎn)生的；有選舉權(quán)的

emit [ e- (ex-) = out 出；mit = to send 送→] v. send out; give off; discharge 發(fā)出，散發(fā)，放射 The sun emits light and heat. 太陽(yáng)發(fā)出光和熱。

emission n. 散發(fā)，發(fā)射

enormous [e-( ex-) = out of 在…之外；norm = rule 規(guī)律；ous a. =being=> “being out of rule 在常規(guī)之外的”→]a. very, very large; huge 巨大的；龐大的 / The glutton had an enormous appetite.那個(gè)好食之徒食量驚人。

enormously ad. 巨大無比地

erupt [e-( ex-) = out 出；rupt=to burst 爆裂→]v. ①burst out 爆發(fā)；噴發(fā) / Lava and ashes erupted from the volcano. 巖漿與火山灰從火山口噴出來。②break out in a rash發(fā)疹/ Her skin erupted when she had measles. 她患麻疫時(shí)，身上起了疹子。

eruption n. 噴發(fā)，爆發(fā)；發(fā)瘆 

eruptive a. 爆發(fā)的，噴發(fā)的；發(fā)疼性的

evaporate [e- (ex-) = out of ; vapor = steam 汽；-ate v. = to make使…“to make steam out of water使蒸汽從水中冒出來”→]v. turn into steam 使蒸發(fā) / Boiling water evaporates rapidly.沸水蒸發(fā)得很快。

evaporation n. 蒸發(fā)（作用）

下面簡(jiǎn)單介紹ex-當(dāng)派生前綴修飾名詞的幾個(gè)例子。

ex-president [ex- = former 前任的；persident n. 總統(tǒng)→]n. former president前總統(tǒng)

ex-soldier [ ex- = former 前的；soldier n. 軍人→]n. member of the armed forces 退伍（或退役）軍人