Prefix -- a b c

Prefix	Meaning	Examples
auto-	自動的；自身的	autoalarm, autobiography, autocracy, autofocus, automobile, autograph, automatic, autonomous
bi-	兩個；雙	biceps, bicycle, bigamy, bilateral, bilingual, binary, binocular, biped, bipolar, biweekly	-gamy = 結婚。請看 mono-
bio-	生命；生物	biochemistry, biography, biology, biotechnology, biopsy	-graphy = 記錄，畫。請看suffixes
bene-	好	benefit, benefactor, benevolent
co-	共同的	coalition, coauthor, coexist, cohabitat, coherence, collaborate, cooperate, coeducation, coworker
com-/con-	結合；共同的	combine, communal, community, common, companion, compare, complete, composition connect, conclude, conjunction, consequence, consider, contact, contemporary, continue, contract, contribute, convince
de-	向下；除去；減去	debug, decaffeinate, decease, decompose, decrease, deforestation, deform, degenerate, degrade, descend, desex (=unsex), deteriorate
en	賦予；使成為；放進	empower enable, endear, enlarge, enrich, enclose, endanger, enfold, empathy	「雙唇音」用 em-
ex-	離開；出自；以前	exceed, exclude, exhale, exhibit, exile, exit, expatriate, expel, expire, extract, extrovert	-trovert 請看 in-
extra-	額外；超	extracurricular, extramarital, extraordinary, extraterrestrial, extravagant	-marital = 婚姻的。請看 pre-
homo-	同類	homicide, homogeneous, homograph, homonym, homosexual, homophobia, homozygote	-cide = 殺...者。請看suffixes
in-	在...之中	include, incorporate, increase, indoors, introvert, intrude, invade, involve, inward
micro-	微小的	microscope, microeconomics, microscope, micro-organism, microfiche, microphone, microwave
mid-	中間的	middle, middle-age, midlife, middle-man, mid-level, midrange, midstream, mid-term, midwife
re-	再；重復	readjust, reappearance, receive, rechargeable, recycle, reform, refund, remain, repent, represent, return, review, revive, revoke, rewrite
semi-	半的	semiannual, semicircle, semicolon, semifinal, semipermeable, semivowel
sub-	在...下面；副的	subconscious, subcontract, subdue, submarine, submerge, subordinate, subscript, subsequence, subside, subsidize, subway
tele-	遠距離	telebanking, telegram, telemarketing, telepathy, telephone, television
trans-	穿過；由一邊到另一邊	transaction, transsexual, transfer, transform, transit, translate, transmit, transplant, transport, transverse