英语构词法主要有：转化法、合成法、派生法、混合法、截短法首尾字母结合法internationaltelephoneextremelymanned英语主要构词法：一.转化.转化词就是由一类词转化为另一类词.①Let'sgooutforawalk.1.动词转化为名词①Didyoubookaseatontheplane?②Pleasehandmethebook.③Shenursedherhusbandbacktohealth2.名词转化为动词①Wewilltryourbesttobetterourlivingconditions.3.形容词转化为动词①Youshouldbedressedinblackatthefuneral.②Theoldinourvillagearelivingahappylife.4.形容词转化为名词二.合成法把两个或两个以上独立的词合成一个新词的方法叫合成法。(2)合成动词ill-treatmass-producesleep-walk(3)合成副词howeverdownstairsbeforehand(4)合成代词anybodynobodysomething(5).合成介词insidewithininto(6).合成名词handwritinggentlemaneditor-in-chief合成名词的复数情况A.主体名词变为复数.looker(s)—onpasser(s)-byson(s)—in—laweditor(s)-in-chiefbrother(s)-in-lawB.没有主体名词的将最后一个词变为复数.grown-up(s)C.其修饰作用的名词是man,woman的时候前后两个名词都变为复数.amanservantmanymenservants三.派生词,派生词是由词根加词缀构成新词,构成的新词成为派生词.(前缀和后缀)除个别前缀外,前缀一般只改变词的意义,不引起词类的转化.常见前缀(prefix)有：1.unhappy,dislike,informal,impolite,illegal,non-smoking,irregular1.un,dis,non,in,im,ir,il等表示“不”2.rebuild,rewrite,revisit,2.re表示重新.3.enlarge,endanger,enable3.en和后面的形容词,名词构成动词.4.prehistoryprefixprewarprepare4.pre表示“之前”5.postwarpostgraduate5.post表示“之后”6.exit,expand,export,exclude6.ex-,表示“外部”7.international,interaction,internet7.inter-,表示“在……间，相互”8.foreward,forecast,forehead,foretell8.fore-,表示“在前面，”9.television,telephone9.tele-,表示“远离”后缀一般只改变词类,不引起词义的变化.常见后缀(suffix)：1.名词后缀er/orvisitorworkeristartistcommunistnessdarknesshappinesstionattentionintroductionmentmovementjudgement–hood,childhood,manhood,-ism,socialism,criticism,heroism–ity，purity,reality,ability2形容词后缀fulcarefulhopefulouscuriousdangerousableknowableusableyhillywindyedcolouredmoneyed-able,comfortable,valuable,movable-ish,foolish,selfishchildish-ful,helpful,wonderful,beautiful3.动词后缀1)-ize,ise,表示“做成”，modernize,realize,organize2)-en,表示“使成为，”quicken,weaken,soften,deepen3)-fy,表示“使……化,”beautify,purify,intensify,4.副词后缀lycarefullynewlygreatly