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1、CommonlyUsedPrefixesandSuffixesI.Prefixes英语单词中的前缀就好比众多词汇的姓氏，掌握单词的前缀，就找到了一条扩大词汇量的捷径。但是一般而言，前缀只用于改变原词义，增添新词义或加强原词义，不改变单词本身的词性。但是有三个例外，be-,en-/em-,a-,这三个前缀并不改变单词的基本意义，而是改变单词的词性。MemorizingthefollowingPrefixes,Suffixes:Prefixes:1.co-/com-/con-/col-:together一起coexist,collaborate,2.re-:again,back,aga
2、instredo,review,refresh,renew,restore,reconstruct,reunion,recall,recede,react,reject,resist3.ex-:formerandstillliving,out,outsideExport,expose,exit,extract,expel,exhale,ex-president,ex-mayor,ex-wife,ex-boyfriend4.inter-:betweenInternational,interschool,inter-group,interact5.intro-/intra-:withi
3、n,inwardIntra-company,introspect,intra-office,intra-school6.semi-:halfSemifinal,semiofficial半官方的,semidetached半独立的semicircle,semiconductor,7.mono-/uni-:one,singleMonocycle单轮车,monotone单调,monorail单轨,monoplane单翼飞机,monolingual单语言,monosyllable单音节,monologue独白Unique,uniform,unilateral8.bi-/di-/du-:two
4、,doublebicycle,bilateral,dialogue,dioxide,duplex,duplicate9.tri-:threetriangle,triangular,trilingual,tricycle,trilateral10.quadric-/quadr(a)-:four,onefourthquadrilateral,quadrangle,quadrant11.quinqu(e)-/quint-/penta-:fivequinquelateral,quinquesection,quinquagenarian,quinquangular,quintessence,
5、pentagon,pentathlon12.sex-/hex(a)-:sixsexagenarian,sextant,sexangular,hexagon,hexagonal13.sept-/hept-:sevenseptangle,septangular,septuagenarian,septennial,heptathlon14.pre-:beforepreview,predict,prehistoric,prejob,premature,presuppose15.per-:throughpersist16.oct(o)-/oct(a)-:eightoctogenarian,o
6、ctagon/octogon,octopus/octopus,octennial17.ennea-:nineenneasyllable,enneagon18.dec(a)-/deci-:ten,onetenthdecade,decathlon,decagon,decimal,decimeter,decapod19.kilo-/milli-/mille-:onethousand,onethousandth5Kilogram,kilometer,milligrade,millimeter,milliliter,millisecond,millennium20.demi-/hemi-/q
7、uasi-:halfDemigod,hemisphere,quasiofficial,quasischolar21.holo-/pan-:allHologram,panAmerican,panAfrican,PanAm.22.omni-:all,alloveromnipresent,omniscience,omnisex,omnivore/omnivorous23.poly-:manypolyfunction,polysyllable24.ante-:beforean
