初中常用的前缀后缀-课件

初中英语常见的前缀和后缀2020/12/121初中英语常见的前缀和后缀2020/12/121常见的否定前缀前缀意义例词un-不，未(=not)unhappy,unnecessary,unexpected,unusual,,相反动作uncover,untie,unlock,undressin-，il-im-，ir-不，非，无incomplete,impossible.impolite,irregular,inability,dis-表示否定表示相反dishonest,disappear,disagreedislike,disbelievemis-表示错、误mistake,misfortune,不幸

misunderstanding误解2020/12/122常见的否定前缀前缀意义例精品资料精品资料你怎么称呼老师？如果老师最后没有总结一节课的重点的难点，你是否会认为老师的教学方法需要改进？你所经历的课堂，是讲座式还是讨论式？教师的教鞭“不怕太阳晒，也不怕那风雨狂，只怕先生骂我笨，没有学问无颜见爹娘……”“太阳当空照，花儿对我笑，小鸟说早早早……”初中常用的前缀后缀-ppt课件精品资料精品资料你怎么称呼老师？如果老师最后没有总结一节课的重点的难点，你是否会认为老师的教学方法需要改进？你所经历的课堂，是讲座式还是讨论式？教师的教鞭“不怕太阳晒，也不怕那风雨狂，只怕先生骂我笨，没有学问无颜见爹娘……”“太阳当空照，花儿对我笑，小鸟说早早早……”初中常用的前缀后缀-ppt课件前缀意义例词a-1.在…上/里2.去（to）asleep,along,aloud,alive,across,abroad在国外,aboard在船/火车/飞机上com-,con-,cor-,col-共同，和comment,collect,co-联合、共同co-worker,coexistre-1.再一次，重新2.回，返renew,reborn,rebuild,reappear,returnfore-时间或位置的“在前面”(=before)foresee,foreleg,foretell预言,foreknow预卜pre-在前、事先、预先(before)prepay,prewar,preschool,prehistory2020/12/127前缀意义例词a-1.在…上/里asleep前缀意义例词post-时间和顺序的“在后边”(=after)post-war,postgraduateinter-互相(=between,among)interactinternationalmulti-多，多种multinationalmulti-culturalmid-中间(=middle)midday,midnighttele-远television,telegramde-1.否定;2.下;3.强调defeat,decode,decreaseen-使enable,encouragesuper-超级、在之上superpower,superhero2020/12/128前缀意义例词post-时间和顺序的“在后边前缀意义例词sub-下面的；次subway,subtitlesemi-半semi-final,semiconductor(半导体）vice-副vice-premier,vice-chairmanuni-单uniformbi-双bicyclemulti-多multinationalauto-自动，自主Automobile汽车,automation(自动化）anti-反、防anti-tank,anti-socialex-前ex-president,ex-wifetrans-跨越;移transport,translate2020/12/129前缀意义例词sub-下面的；次subway写出下面单词的前缀important重要的→___important不重要的

appear出现→____appear消失

correct正确的→___correct不正确的

lead带领→___lead领错__lone单独的

___gas防毒气的

___chart自动图表

___operate合作

__joy使高兴

___net互联网

___way地铁

___phone电话

___use再用

2020/12/1210写出下面单词的前缀important重要的→___impor找出课文中还有所学词缀的单词2020/12/1211找出课文中还有所学词缀的单词2020/12/1211说出下列前缀的意思sub-com-pre-mis-im-un-tele-re-en-uni-trans-a-dis-inter-multi-fore-post-2020/12/1212说出下列前缀的意思sub-en-2020/12/1212后缀意义例词

表示人

-er从事…职业的人teacher,worker,learner-or与-er同义visitor,educator,translator-eer从事于...的人engineer,volunteer,mountaineer-ess女...的actress,waitress,hostess-ian...(专)家/..工作者politician,musician-ist从事...职业/文艺/学术的人artist,socialist,physicist表示物-er从事某工作的物washer,cooker-or从事某工作的物conductor导体表示人和物的名词后缀2020/12/1213后缀意义例词-er从事…职业的人tea前缀意义例词-ing状态feeling，reading-ion/-tion/-sion动作；过程action,decision,pollution,pronunciation-ment性质；状态development，government-ness性质；状态happiness，sadness，illness-ure状态failure，pleasure-th性质,状态growth,length,wealth,truth其他名词后缀2020/12/1214前缀意义例词-ing状态feeling，后缀意义例词-(a)ble可/能…的valuable,horrible,-al有...性质的natural,technical,actual-ic,-ical...性质的，与...有关的musical,basic,scientific-ant,-ent...的important,pleasant,excellent-ish稍带...的/...语的childish,

English,Spanish-ive有...倾向的/性质的active,

expensive-ful充满...的thankful,powerful,tearful-less表示否定homeless,harmless,wireless-ous充满...的，有...特征dangerous,famous,nervous-y有/多...的，想...的cloudy,sunny,funny,sleepy-ed有...的，有...特征的tired,interested,learned博学

-en由...构(制)成的wooden,woolen-ern...方向的eastern,western,southern-ly有...性质的，...形状的yearly,daily,orderly,lively形容词后缀2020/12/1215后缀意义例词-(a)ble可/能…的differ不同于→differ_____不同的write写→write___作家Japan日本→Japan_____日本人act表演→act____女演员mouth口→mouth____一口music音乐→music_____音乐家entreseressfulian2020/12/1216differ不同于→differ_____不同的entresnature自然→natur___自然的reason道理→reason____有道理的gold金子→gold___金的east东→east_____东方的child孩子→child_____孩子气的snow雪→snow___雪的alableenernishy2020/12/1217nature自然→natur___自然的al用所给单词的适当形式填空。1.Marywasvery______atthenews,soshelooked______atherhusband,hereyesfullof________(sad).2.He________footballverywellandhewasoneofthebest______inyesterday’sfootballmatch.(play)3.Look!How________Kateislaughing!Sheseemstobethe______girlintheworld(happy).4.Edisonwasagreat________.Duringhislifehehadmany_________.(invent)5.Lucyalwayscaresaboutherpersonal__________.Shehas__________inover60movies.(appear)6.Youareso_______tohelpme.Thankyouforyour________.(kindly)sadsadlysadnessplayedplayershappilyhappiestinventorinventionsappearedappearancekindkindness2020/12/1218用所给单词的适当形式填空。sadsadlysadnesspl2020/12/12192020/12/1219说出下列后缀的意思-eer-ian-ess-ist-ish-tion-ness-ure-less-ful-ern-ous-able-en-ical2020/12/1220说出下列后缀的意思-eer-less2020/12/1220后缀用法及意义例词-ly加在形容词之后表示某种状态cheerfully,simply,excitedly表示程度completely表示时间recently表示次序firstly,secondly-ward-wards加在名词或副词后，表示“向......地”forward,backward,upward,downward,towards,northward副词后缀2020/12/1221后缀用法及意义例词-ly加在形容词之后表示某种状态cheer意义例词-ate使成为，成为...educate,translate,calculate-en变为，使有darken,weaken,deepen,sharpen,frighten-fy使成为，使...化beautify,satisfy-ize-ize变成，...化modernize,realize,动词后缀2020/12/1222意义例词-ate使成为，成为...educa意义例词-teen十几thirteen-ty几十twenty-th构成序数词fifth数词后缀2020/12/1223意义例词-teen十几thirteen-wide宽的→wide___加宽

beauty美→beaut_____美化

real现实的→real____意识到

organ机关,器官→organ_____组织angry生气的→angr_____生气地

to到→to______朝……，向……six→six______十六

→six_______第十六

four→f_____四十

→f______第四十nifyizeizeilywardsteenteenthortyortieth2020/12/1224wide宽的→wide___加宽nifyizeiz2020/12/12252020/12/1225分类构成例词形容词后缀-able有某种能力的comfortable，unforgettable-al有某种特征的natural，traditional-an某国或洲人的American，African-ed有能力的talented，balanced-en某种材料的golden，wooden-ese某国人的Chinese，Japanese-ful有某种特征的beautiful，hopeful，useful-less表示否定careless，endless，useless-ous有某种特征的nervous，dangerous-y表示天气或特征dirty，rainy-ly有某种特征的friendly-ive有某种特征的active，expensive2020/12/1226分类构成例词形容词-able有某种能力的comfortab-agemarriage,luggage,postage邮费

-urefailure,temperature,pressure,pleasure,-itymajority,opportunity,-mentargument,statement,achievement,amusement,equipment-ismcommunism,criticism,internationalism,socialism-anceappearance,entrance,-domkingdom,wisdom,freedom-ydifficulty,discovery,bravery,machinery-alarrival,refusal,disapproval,-nesskindness,illness,brightness,selflessness,correctness-shipcitizenship,friendship,professorship,hardship,comradeship-hoodchildhood,brotherhood,兄弟情谊，-thstrength,growth,length,wealth,truth-erybravery,slavery,chemistry,surgery,machinery抽象名词和集体名词的后缀2020/12/1227-agemarriage,luggage,postage1.前缀

加前缀一般不改变词类，而只是改变原词的词义。分类构成例词构成反义词的前缀dis-disagree，disappear，dislikeim-impolite，impossibleun-unable，uncertain，unhappy表示特定意思的前缀down-往下downloadkilo-千kilometreman-人，由人man-mademis-错误地mistake，misunderstandre-重新，再次rebuild，retell可以改变词性的前缀a-加在名词前构成形容词或副词asleep，aboard，asideen-加在名词或形容词前构成动词encourage，enable，enrich2020/12/12281.前缀分类构成例词构成反义词的前缀dis-disagre2．后缀

加后缀一般只改变原词的词性。分类构成例词名词后缀-er从事某工作的人dancer，driver-ing状态feeling，reading-ion/-tion/-sion动作；过程action，decision-ist专业人员scientist，terrorist-ment性质；状态development，government-ness性质；状态happiness，sadness-or从事某事的人actor，visitor-tion动作；过程invention，pronunciation-ure状态failure，pleasure2020/12/12292．后缀分类构成例词名词-er从事某工作的人dancer，分类构成例词形容词后缀-able有某种能力的comfortable，unforgettable-al有某种特