词根词缀课件

词汇篇 词根词缀1词汇篇词根词缀1“词根”“词缀”是什么？单词由词根和词缀构成词缀又分为前缀和后缀也就是说，单词一般由三部分组成：词根、前缀和后缀词根决定单词意思，前缀改变单词词义，后缀决定单词词性2“词根”“词缀”是什么？单词由词根和词缀构成词缀又分为前缀和词根常用词根（初阶）1.-equ-相等的equal,equable,equably,equabilityequity,equitable 3词根常用词根（初阶）1.-equ-相等的equal,equ词根常用词根（初阶）2.-medi-mediate,intermediate medieval其他：-centr-,-just-,-form-.4词根常用词根（初阶）2.-medi-mediate,in词根常用词根（中阶）1.-civ-公民civil,civilian,civilize,recivilize,civilization 5词根常用词根（中阶）1.-civ-公民civil,civi词根常用词根（中阶）2.-sim-相同similar,dissimilar,similaritysimultaneous,simultaneity 其他：-electr-,-scrib-,-frig-.6词根常用词根（中阶）2.-sim-相同similar,d词根常用词根（高阶）1.-dur-持久during durable,duration,nondurable 7词根常用词根（高阶）1.-dur-持久during dur词根常用词根（高阶）2.-leg-法legal,illegal,legislationlegistimate其他：-aer-,-fibr-,-al-8词根常用词根（高阶）2.-leg-法legal,ille前缀改变词义的前缀 有哪些呢？表否定表数字表时间和次序表尺寸其他9前缀改变词义的前缀有哪些呢？表否定表数字表时间和次序表尺寸其否定前缀 常见的11种 规律 im il ir、dis-:disadvantage,disagreein-:incorrect,inaccurate im-:impossible,impolite il-:illegal,illiterate ir-:irregual,irresistableun-:unfinished,undoubtedlynon:nonessential,nonexistence mis-:misunderstand,misfortune dis-:disappear,disconnect anti-:antisocial counter-:counteract 10否定前缀常见的11种规律im il ir、dis-:dis数字前缀semi-:semiconductor,semicirclemono-:monopoly,monochrome bi-:bilateral,bicolortri-:triple,triangle multi-:multination,multimedia 11数字前缀semi-:semiconductor,semi时间次序前缀pre-:preface,preconceptionpro-:prologue fore-:forehead,foresee ex-:ex-president,ex-wife post-:postwar12时间次序前缀pre-:preface,preconcep尺寸前缀mini-:miniature,miniskirtmicro-:microwave,microscopemacro-:macroworld,macrostructuremega-:megacity,megahertz 13尺寸前缀mini-:miniature,miniskirt常见的四种后缀1.名词性后缀2.形容词性后缀3.副词性后缀4.动词性后缀14常见的四种后缀1.名词性后缀2.形容词性后缀3.副词性名词性后缀1.-ion:occasion,division2.-ist:specialist,biologist 3.-ment:experiment,measurement4.-ness:darkness,hardness5.-cy:infancy,accuracy6.-ency/ancy:tendency,emegency,constancy,pregnancy 7.-logy:psychology,histology8.-ty:capacity,similarity15名词性后缀1.-ion:occasion,divisi形容词性后缀1.-able:acceptable,available2.-al:vocal,captial3.-ant:significant,resistant4.-ar:regular,muscular5.-ary:ordinary,anniversary 6.-ent:consistent,efficient 7.-ful:useful,successful 16形容词性后缀1.-able:acceptable,av副词性后缀1.-ly:likely,immediately2.-ward:forward,backward 3:-wise:likewise,otherwise 17副词性后缀1.-ly:likely,immediate动词性后缀1.-ate:accelerate,operate 2.-en:weaken,deepen3.-ize:standardize,modernize 18动词性后缀1.-ate:accelerate,oper根据后缀辨别下列单词的词性1.scientist 2.singer 3.conversation 4.beautiful 5.loudly 6.advertisement 7.government 8.yearly 9.instruction 10.careful 11.lively 12.safety13.national 14.traditional 15.illness 16.wonderful petition 18.information 19.successful 20.natural 21.usually 22.lovely 23.really 24.friendly 19根据后缀辨别下列单词的词性1.scientist 2.s