课时三英语名词单数变复数的规则

1课时三英语名词单数变复数的规则一、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→flashes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→daisies;fairy→fairies;lady→ladies;story→stories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。读音变化：加读[z]。例：tomato→tomatoes;potato→potatoes;torpedo→torpedoes;bingo→bingoes反例：silo→silos;piano→pianos（外来词）;photo→photos;macro→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→staves;scarf→scarves反例：roof→roofs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→fungi;abacus→abaci;focus→foci;cactus→cacti;cestus→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→axes;basis→bases;naris→nares;hypothesis→hypotheses;restis→restes八、以-ix结尾的名词，通常将-ix改变为-ices，但有例外。读音变化：尾音[iks]改读[isi:z]。例：matrix→matrices;directrix→directrices;calix→calices;appendix→appendices反例：affix→affixes九、以-um结尾的名词，将-um改变为-a。读音变化：去掉鼻尾音。例：forum→fora;stadium→stadia;aquarium→aquaria;datum→data;vacuum→vacua十、以-a结尾的名词，在该词末尾加上后辍-e。读音变化：尾音[E]改读[i:]。例：larva→larvae;formula→formulae;ala→alae;media→mediae;hydra→hydrae十一、部分单词的复数形式不变。读音变化：保持原音。例：fish→fish;sheep→sheep;cattle→cattle;deer→deer;salmon→salmon十二、极少数单词，其复数形式没有任何规律。读音变化：没有规律。例：man→men;woman→women;child→children;person→people;ox→oxen十三、一些单数词得加en才能变成复数词：例：ox→oxen;child→children;brother→brethren十四、一些单数词得改头换面一番,才能变成复数词例：analysis→analyses分析;basis→bases基础;datum→data数据;foot→feet;2formula→formulae/formulas公式;goose→geese;louse→lice虱子;man→menmouse→mice;medium→media/mediums媒介;memorandum→memoranda/memorandums备忘录;parenthesis→parentheses圆括号;phenomenon→phenomena现象;radius→radii半径tooth→teeth;woman→women十五、有些名词是单数、复数不分的例：deer;fish;cannon;sheep;salmon鲑鱼;trout鳟鱼十六、一些名词虽分单数、复数，但出现次数多的总是单数词例：abscence;clothing;film;help;furniture家具;machinery机械;news;scenery风景;sugar;traffic交通十七、另一些名词则以复数词出现的机会较多例：bellows风箱;clothes;police;shorts短裤;scissors剪刀;spectacles眼镜;shears大剪刀trousers长裤;wages工资十八、compoundnouns，这类复数词是以主要的名词来表示例：daughter-in-law→daughters-in-law媳妇;father-in-law→fathers-in-law岳父man-of-war→men-of-war兵舰;maid-servant→maid-servantsstep-son→step-sons晚子;son-in-law→sons-in-law十九、若表达具体数目，要借助数量词例：pair(对，双);suit(套);apairofglasses;twopairsoftrousers二十、另外还有一些名词，其复数形式有时可表示特别意思，例：goods货物，waters水域，fishes（各种）鱼二十一、除人民币元、角、分外，美元、英镑、法郎等都有复数形式。例：adollar,twodollars;ameter,twometers以O结尾的词，许多加es构成复数，特别是一些常用词如：heroes,potatoes,tomatoes,echoes,tornadoes,torpedoes,dominoes,vetoes,mosquitoes,Negroes,mangoes,buffaloes,volcanoes但下面几类词只加s：1.以“元音+o”或“oo”结尾的词如:videos,radios,studios,folios,oratorios,embryos,zoos,bamboos,kangaroos,taboos2.一些外来词，特别是音乐方面的词，如：pianos,solos,concertos,tobaccos,mottos,cellos3.一些缩写词和专有名词，如：kilos,photos,memos,micros,Eskimos,Filipnos有个别词加两种词尾都可以，如：archipelago(e)s,halo(e)s,cargoes(英），cargos(美）名词由单数变成复数的练习写出下列名词复数leaf______puppy_______box_______knife_______fly______fox______bus______bench_____brush_____kiss______church______dish_____ruler______peach________glass_____pencil________boy______zoo______man______roof_______sheep_______knife______lady______key______story______watch______bamboo______city______family______day_____apple_______eraser______speech______thief______mouse______fish_____goose____people______ox_____Chinese_______deer_______foot______child_______tooth_______guy________hero_______spy______boss_____monkey______city______goat______radio________horse______dog______3用所给的单词的复数的正确形式填空：1Therearesomany________(wolf)intheforest.2Therearethree______(chair)intheclassroom.3These_______(tomato)arered.4______(hero)aregreat.5Mybrotherlooksaftertwo______(baby)6Therearesome______(deer)eatingthegrass.7Myfatherlikestoeat_______(potato).8Chinese______(people)liketoeatnoodles.9Ihavealotof______(toy)inmybedroom.10Ihelpmymotherwash______(dish)inthekitchen.11Ihavetwo______(pencil-box).12Therearesome______(bus)inthestreet.13Peterhaseight_____(foot).14Lindahasthree_______(tooth).15Therearesome______(child)inthegarden.16Michaellikesthe______(mouse).17Therearesome______(goose)intheriver.18Myuncleandfatherare_____(man).19TomandKingare_____(boy).20Lindahasthree______(tooth).选出正确形式1．Icanseethree________inthezoo.AmonkeysBmonkeysCmonkey2.Thepighasfour______.A.footB.feetC.foots3.Mytwobrothersareboth______.A.policemanB.policemansC.policemen4.Therearefour___________intheclass.A.JapaneseB.JapanesesC.Japan5.Icanseeten_____inthepicture.A.sheepB.dogC.pig6.The_____hasthree______.A.boys,watchesB.boy,watchC.boy,watches7.Canyousee_______ontheplate?A.breadB.breadsC.breades8.Thegirloftenbrushesher_____beforeshegoestobed.A.toothB.toothsC.teeth9.MrBlackoftendrinksome_________.A.milkB.milksC.milkes10.Therearesome_____onthefloor.A.childB.waterC.books11._______willlearnEnglish.A.WomanB.WomenC.Man12.Lucywillshowussomenew____ofhers.A.photoB.photosC.photoes13.Idranktwo______.4A.bottlesoforangeB.bottleoforangeC.bottlesoforanges14.Thecateatstwo______lastnight.A.mo