可数名词变复数规则总结.doc

初中可数名词变复数规则总结 英语名词单数变复数主要有以下规则:一、绝大多数的可数名词的复数形式,是在该词末尾加上后辍-s。读音变化:结尾是清辅音读[s],结尾是浊辅音或元音读[z]。例:friend→friends;cat→cats;style→styles;sport→sports;piece→pieces二、凡是以s、z、x、ch、sh结尾的词,在该词末尾加上后辍-es构成复数。读音变化:统一加读[iz]。例:bus→buses;quiz→quizzes;fox→foxes;match→matches;flash→flashesbox→boxes;watch→watches;actress→actresses;class→classes;coach(长途车)→coaches;dress→dresses;sandwich→sandwiches;toothbrush→toothbrushes;waitress(女侍者)→waitresses三、以辅音字母+y结尾的名词,将y改变为i,再加-es。读音变化:加读[z]。例:candy→candies;daisy(雏菊)→daisies;fairy→fairies;lady→ladies;story→storiesstrawberry→strawberries;baby→babies;puppy→puppies;library→libraries;dictionary→dictionaries;cherry→cherries;activity→activities四、以-o结尾的名词,如果不是外来词或缩写,就加-es,否则加-s构成复数。(有生命的加es,无生命的加s)读音变化:加读[z]。例:tomato→tomatoes;potato→potatoes;torpedo(鱼雷)→torpedoes;bingo(彩票式游戏)→bingoes反例:silo(青贮塔)→silos;piano→pianos(外来词);photo→photos;macro(宏指令,计机算语言)→macros(缩写词)五、以-f或-fe结尾的名词,多为将-f或-fe改变为-ves,但有例外。读音变化:尾音[f]改读[vz]。例:knife→knives;life→lives;leaf→leaves;staff(员工)→staves;scarf(围巾)→scarves目前搜集的直接加s:roof-roofs,belief-beliefs,gulf(海湾)-gulfs,serf(农奴)-serfs,safe-safes,chief(负责人)-chiefs这几个可变可不变:scarf-scarfs,handkerchief-handkerchiefs六、以-us结尾的名词(多为外来词),通常将-us改变为-i构成复数。读音变化:尾音[Es]改读[ai],其中[kEs]要改读为[sai],[gEs]要改读为[dVai]。例:fungus(真菌)→fungi;abacus(算盘)→abaci;focus(焦点)→foci;cactus(仙人掌)→cacti;cestus(拳击用的牛皮手套)→cesti七、以-is结尾的名词,通常将-is改变为-es。读音变化:尾音[is]改读[i:z]。例:axis(轴线)→axes;basis→bases