如何巧用构词法记忆英语单词巧用构词法记忆英语单词一.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方法叫做转化法。1.动词转化为名词●Letmehaveatry.让我试试。●Theyareonlyallowedtosellsoftdrinksatschool.在学校里只准许他们出售不含酒精的饮料。2.名词转化为动词●Heshoulderedhiswaythroughthecrowd.他用肩膀推开人群前进。●Thesmellfromthekitchenmadehismouthwater.从厨房传来的气味使他流口水。3.形容词转化为动词●Wewilltryourbesttobetterourlivingconditions.我们要尽力改善我们的生活状况。●Theytriedtoperfecttheworkingconditions.他们努力改善工作条件。4.形容词转化为名词●Hedidn’tknowthedifferencebetweenrightandwrong.他不辨是非。●Theoldinourvillagearelivingahappylife.我们村的老年人过着幸福的生活。5.形容词转化为副词●Howlonghaveyoulivedthere?你在那儿住多久了?6.个别词在一定场合中可转化为名词●Warmclothesareamustinthemountains.穿暖和的衣服到山区去是必须的。●Lifeisfullofupsanddowns.人生有得意时也有失意时。●Hisargumentcontainstoomanyifsandbuts.他的辩论中含有太多的“如果”和“但是”。二.合成法由两个或两个以上的单词连在一起合成一个新词，这种构词法叫做合成法，合成的词叫做合成词。合成词一般看其词，知其意。1.合成名词●名词/代词+名词newspaperblood-testshe-wolf●动词+名词typewriterpickpocketdaybreak●形容词+名词greenhousehighway●副词+名词overcoatoutside●名词+v.-ing/v.-ing+名词handwritingreading-roomfreezing-point●动词+副词/副词+动词breakthroughget-togetheroutbreakoutcome●名词+介词+名词sister-in-laweditor-in-chief2.合成形容词●名词+形容词/形容词+名词world-famousduty-freelarge-scalelong-term●副词+形容词over-anxiousevergreen●名词+过去分词man-madesun-burnt●名词+现在分词peace-lovingEnglish-speaking●形容词+现在分词good-lookingeasy-going●副词+过去分词well-informedwidespread●副词+现在分词hardworkingfar-reaching●形容词+名词+edwarm-heartedabsent-minded●数词+名词+edthree-leggedten-storied●数词+名词one-wayfive–star●数词+名词+形容词ten-year-old800-meter-long●名词+to+名词face–to-facedoor-to-door3.合成动词●名词+动词baby-sitsleepwalk●副词+动词outnumberunderestimateoverwork●形容词+动词whitewash4.合成副词●形容词+名词meanwhileanyway●形容词+副词everywhereanyhow●副词+副词however●介词+名词beforehandoverhead●介词+副词forever5.合成代词●代词宾格+self/selvesherselfthemselves●物主代词+self/selvesmyselfyourselves●形容词+名词anythingnothing6.合成介词●副词+名词insideoutside●介词+副词withoutwithin●副词+介词into三.派生法由一个词加上前缀或后缀构成一个与原单词意义相近或截然相反的新词叫做派生法。1.前缀除少数前缀外，前缀一般改变单词的意义，但不改变单词的词性。(1)表示否定意义的前缀●un-unhappyunfinishedundress●dis-disagreedisbelieve●in-[il-(在字母l前)，im-(在字母m,b,p前)，ir-(在字母r前)]inaccurateillegalimpoliteimbalanceirregular