一、可数名词变双数规那么1.普通状况下加s例:friend→friends;cat→cats;style→styles;sport→sports;piece→pieces2.以s、z、x、ch、sh开头加es例:bus→buses;quiz→quizzes;fox→foxes;match→matches;flash→flashes3、以子音字母+y开头,将y改动为i,再加-es例:candy→candies;lady→ladies;story→stories4、以-o开头的名词,假如不是外来词或缩写,就加-es,否那么加-s形成双数。(有性命的加es,无性命的加s)例:tomato→tomatoes;potato→potatoes;torpedo(鱼雷)→torpedoes;bingo→(彩票式游戏)bingoes反例:radio→radios;piano→pianos(外来词);photo→photos;zoo→zoos5、以f或fe开头的将f或fe变为-ves,但有破例例:knife→knives;lifescarf→(领巾)scarves→lives;leaf→leaves;员工)staff(→staves;直截了当加s:roof-roofs,belief-beliefs,gulf(海湾)-gulfs,serf(农奴)-serfs,safe-safes,chief(担任人)-chiefs6、不规那么名词:例:man→men;woman→women;child→children;personfoot→feet;goose→geese;mouse→mice;tooth→people;ox→;oxen→teeth;datum→数据dataanalysis→analyses剖析;basis→bases根底;datum→data数据;formula→公式formulae/formulas;louse→虱子lice;medium→media/mediums前言;phenomenon→phenomena景象7、单双数同形例:Chinese中国人;Japanese日自己;deer;fish;cannon(年夜炮);sheep;8、一些名词那么以双数词呈现的时机较多例:bellows风箱;clothes;police;shorts短裤;scissors铰剪;spectacles眼镜;shears年夜铰剪trousers长裤;wages人为9、其余复合名词变双数,这类双数词是以要紧的名词来表现例:daughter-in-law→daughters-in-law媳妇;father-in-law→fathers-in-law岳父;maid-servant→maid-servants女仆tep-son→step-sons晚子;son-in-law→sons-in-law半子10、以man或woman为前缀的名词变双数时,前后两个名词都酿成双数。例:womandoctor→womendoctors,manwaiter→menwaiters.二、动词第三人称双数变更规那么1、年夜少数动词在词尾加s如:stop--stops;make--makes2、以s,x,ch,sh开头加es如:pass--passes;relax--relaxes;teach--teaches;wash--washes3、以子音字母加y开头的,要先将y变为i,加es如:fly--flies;carry--carries;study--studies4、以o开头加es如:go--goes;do--does三、动词加ing变更规那么1.普通状况下,直截了当加-ingcough—coughing,climb—climbing,stand—standing,see—seeing2.以一子音加一不发音的-e开头,去失落e加ingwrite—writing,hope—hoping,care—caring,stare—staring,plane—planing,have—having,save—saving,produce—producing,breathe—breathing3、重读闭音节(在重读音节中,只要一个元音字母后接一个子音字母)末端子音字母加ing,双写stop--stopping,run--running,get--getting,win--winning4、以-ie开头的将e去失落,将i酿成y再加-ingdie—dying,tie—tying,vie—vying,lie—lying四、动词过来式、过来分词变更规那么动词过来式跟过来分词有规那么变更跟不规那么变更两种。(一)规那么变更:1.普通状况直截了当加ed,如ask—asked,work—worked2.以不发音的e开头,只加d,如love—loved,dance—danced3.以子音字母加y开头,把y变为i,再加ed,如try—tried,study—studied4.以一个元音字母跟一个子音开头的重读闭音节开头的动词(以重读闭音节或r音节开头而末端只要一个子音字母),先双写末端那个子音字母,再加ed如stop—stopped,permit—permitted(二)不规那么动词的过来式、过来分词变更规那么,须多加经历come--came--come;go--went--gone;make--made--made等五、描述词、副词变比拟级、最初级的变更规那么1.普通在描述词或副词前面直截了当加-er或-esttall—taller—tallest2.以-e开头的描述词或副词直截了当加-r或-stlarge—larger—largestnice—nicer—nicest3.以-y开头的描述词或副词,改-y为-i再加-er或-estbusy—busier—busiestearly—earlier—earliest4.描述词或副词是重读闭音节时,双写最初的子音字母,再加hot—hot...