记单词是让很多人头疼的事情，不过特别有心的人会发现：单词与单词之间其实是有联系的。这就是我们要说的——构词法。
英语的构词法主要包括：转化词、派生词、合成词、混成词、截短词、缩略词等，其中前三种最为重要，下面我们就分若干次给大家一一列举出来。
一、转化词
转化词就是词形不变,由一个词类转化成另一个词类的词
1、转化动词，如:mark评分,stage上演,warm加热,使温暖,further促进,water浇水
a.Warmthemilkbeforedrinkingit.
b.Shewaterstheflowerseveryday.
c.Coolthewaterbeforeyoudrinkit.
d.Thetrainsloweddownasitenteredthestation.
2、转化名词，如:cause起因,use用处,native本地人,major主修科目
a.Let’sgoforadrivenextSunday.
b.Youcanaskforahelp.
c.Theystoppedthereforaswim.
二、合成词
合成词是由两个或两个以上的词合成的一个新词
1、合成名词，如:workforce,haircut,postman,X-ray,mailbox,landowner,farmland,handstand,handshake,coastline,gunfire,short-wave,gentleman,newcomer,tightrope,best-seller,mainland,freeway,second-hand,midday,front-runner,pickpocket扒手,breakwater防波堤,runway,sit-downer静坐罢工者,breakthrough突破,runaround借口,runaway逃亡,sell-out售完,handout传单,breakdown衰落
2、合成形容词，如:worldwide,nationwide,duty-free,snow-white,world-famous,lifelong,English-speaking,noise-killing,hand-made,peace-loving,horse-drawn,fun-loving,ready-made现成的,good-looking,easy-going,low-lying地势低洼的,well-known,hard-working,well-informed消息灵通的,widespread,ill-formed,first-rate,second-hand,worthwhile,everyday,middle-aged,warm-blooded,good-tempered,bare-footed
3、合成代词，如:himself,herself,themselves,something,someone,anything,nobody
4、合成动词，如:overthrow,output,input,uphold,uplift,downgrade,sleep-walk,typewrite,brainwash,handpick精选,daydream,whitewash,deep-freeze
5、合成副词，如:meanwhile,midway,everywhere,somewhere,anyway,otherwise,sometime,beforehand,onshore,inside,offhand,headfirst头朝下地,daylong
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