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英语中的构词法首要有三种，即转化法、组成法和派生法。
一.%20转化法
在英语中，一个单词由一种词性转化为另一种或几种词性而词形不变的办法叫做转化法。
1.%20动词转化为名词
●Let%20me%20have%20a%20try.%20
让我试试。
●They%20are%20only%20allowed%20to%20sell%20soft%20drinks%20at%20school.
在学校里只答应他们出售不含酒精的饮料。
2.%20名词转化为动词
●He%20shouldered%20his%20way%20through%20the%20crowd.
他用肩膀推开人群行进。
●The%20smell%20from%20the%20kitchen%20made%20his%20mouth%20water.
从
3.%20描述词转化为动词
●We%20will%20try%20our%20best%20to%20better%20our%20living%20conditions.
咱们要极力改进咱们的日子情况。
●They%20tried%20to%20perfect%20the%20working%20conditions.
他们尽力改进作业条件。
4.%20描述词转化为名词
●He%20didn’t%20know%20the%20difference%20between%20right%20and%20wrong.
他不辨对错。
●The%20old%20in%20our%20village%20are%20living%20a%20happy%20life.
咱们村的晚年人过着夸姣的日子。
5.%20描述词转化为副词
●How%20long%20have%20you%20lived%20there?
你在那儿住多久了？
6.%20单个词在必定场合中可转化为名词
●Warm%20clothes%20are%20a%20must%20in%20the%20mountains.
穿温暖的衣裳到山区去是有必要的。
●Life%20is%20full%20of%20ups%20and%20downs.
人生有满足时也有失落时。
●His%20argument%20contains%20too%20many%20ifs%20and%20buts.
他的争辩中富含太多的“假定”和“可是”。
二.%20组成法
由两个或两个以上的单词连在一同组成一个新词，这种构词法叫做组成法，组成的词叫做组成词。组成词一般看其词，知其意。
1.%20组成名词
●名词/代词+名词%20newspaper%20blood-test%20she-wolf
●动词+名词%20typewriter%20pickpocket%20daybreak
●描述词+名词%20greenhouse%20highway%20
●副词+名词%20overcoat%20outside
●名词+v.-ing/v.-ing%20+名词%20handwriting%20reading-room%20freezing-point%20
●动词+副词/%20副词+%20动词%20breakthrough%20get-together%20outbreak%20outcome
●名词+介词+名词%20sister-in-law%20editor-in-chief%20
2.%20组成描述词
●名词+描述词/描述词+名词%20world-famous%20duty-free%20large-scale%20long-%20term
●副词+描述词%20over-anxious%20
●名词+曩昔分词%20man-made%20sun-burnt
●名词+
●描述词+如今分词%20good-looking%20easy-going%20
●副词+曩昔分词%20well-informed%20widespread
●副词+
●描述词+名词+ed%20warm-hearted%20absent-minded
●数词+名词+ed%20three-legged%20ten-storied
●数词+名词%20one-way%20five–star
●数词+名词+描述词%20ten-year-old%20800-meter-long
●名词+to+名词%20face%20–to-face%20door%20-%20to%20-door%20
3.%20组成动词
●名词+动词%20baby-sit%20sleepwalk%20
●副词+动词%20outnumber%20underestimate%20overwork
●描述词+动词%20whitewash
4.%20组成副词
●描述词＋名词%20meanwhile%20anyway
●描述词＋副词%20everywhere%20anyhow
●副词＋副词%20however
●介词＋名词%20beforehand%20overhead
●介词＋副词%20forever%20
5.%20组成代词
●代词宾格＋self/selves%20herself%20themselves
●物主代词＋self/selves%20myself%20yourselves%20
●描述词＋名词%20anything%20nothing
6.%20组成介词
●副词＋名词%20inside%20outside
●介词＋副词%20without%20within
●副词＋介词%20into
三.%20派生法
由一个词加上前缀或后缀构成一个与原单词意义附近或截然相反的新词叫气度生法。
1.%20前缀
除少量前缀外，前缀一般改动单词的意义，但不改动单词的词性。
（1）标明否定意义的前缀
●un-%20unhappy%20unfinished%20undress
●dis-%20disagree%20disbelieve
●in-%20[il-(在字母l前)，im-%20(在字母m,b,p前)，ir-%20(在字母r前)]%20inaccurate%20illegal%20impolite%20imbalance%20irregular
●mis-%20misbehave%20mislead%20mistake
●non-%20nonstop%20nonsmoker
（2）标明其他意义的前缀
●en-%20“使……”enrich%20enlarge%20encourage
●inter-%20“彼此”international%20intercontinental
●re-%20“再，又，重”rethink%20retell%20recycle
●tele-%20“远程的”telescope%20telephone%20telegraph
●auto-%20“主动的”automatic%20automobile
●co-%20“一起”coworker%20cooperate%20coexist
●anti-%20“对立，反抗”antiwar%20antifreeze%20antinuclear
●multi-%20
“多”multistory multicultural multicolor
●bi- ??span>bicycle bilingual bilateral
●micro- “极小的，细小的”microwave microcomputer
●over- “太多，过火”overwork overdo overestimate
●self- “自个，本身”self-centered self-confident self-control
●under- “在……下面，……下的，缺乏的”underline, underground, underestimate, underrate
2. 后缀
（1）描述词后缀
●-able “可……的，具有……的”acceptable drinkable knowledgeable reasonable
●-al “与……有关的”physical, magical, political
●-an “归于某当地的人”American African
●-ern “方向”southern, northern, eastern
●-ful/ less “（没）有……的”helpful, useful, homeless, hopeless
●-ish “如……的；有……特征的”foolish childish selfish
●-ive “有……倾向的”active attractive expensive
●-en “由……制成的”golden wooden 
woolen
●-ous “有（性质）的”famous, dangerous, poisonous
●-ly “有……性质的”friendly yearly daily
●-y “构成描述词”noisy dusty cloudy
（2）名词后缀
●-er / or “表人或用具” farmer, baker, visitor, professor, cooker, container
●-ese “某国（人）的”Chinese, Japanese
●-ian “某国、某地人；通晓……的人”musician, Asian, Russian, technician
●-ist “某种主义或作业者”physicist, scientist, communist，socialist
●-ess “表女人，雌性”hostess, actress, princess
●-ment “行为或其状况”government, movement, achievement
●-ness “性质，状况”illness, sadness, carelessness
●-tion “动作，进程，成果”invention, organization, translation
●-ance/ ence “笼统；行为、性质、状况”importance, appearance, absence, existence
●-th “性质、情况” depth, warmth, truth
●-ful “（满的）量”handful, spoonful, mouthful
●-(a)bility “笼统、性质、状况”possibility, disability, reliability
●-al “进程、状况”survival, arrival, approval
●-y “性质、情况”modesty, delivery, honesty
●-dom “处于……状况；性质”freedom, boredom
●-age “状况，行为，身份及其成果”courage, storage, marriage
（3）动词后缀
●-fy / ify “使得；变得” simplify, beautify, purify
●-en “使变成；变得” shorten, deepen, sadden
●-ize “使变成” apologize, realize, specialize
（4）副词后缀
●-ly “方法，程度” freely, truly, angrily
●-ward(s) “向……” towards, forward, upwards
（5）数词后缀
●-teen “十几” fourteen, eighteen, thirteen
●-ty “整十位数” forty, fifty, sixty
●-th “序数词” twelfth, twentieth
▍ 这篇文章修改：颜教师
▍ 来历：网络
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