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1、七年级下册英语语法丨名词单数变复数的规则及练习题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：friendfriends; catcats; stylestyles; sportsports; piecepieces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：busbuses; quizquizzes; foxfoxes; matchmatches; flashflashes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
2、读z。例：candycandies; daisydaisies; fairyfairies; ladyladies; storystories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：tomatotomatoes; potatopotatoes; torpedotorpedoes; bingobingoes反例：silosilos; pianopianos（外来词）; photophotos; macromacros（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
3、knives; lifelives; leafleaves; staffstaves; scarfscarves反例：roofroofs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：fungusfungi; abacusabaci; focusfoci; cactuscacti; cestuscesti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：axisaxes; basisbases; narisnares; hypothesishypothese
4、s; restisrestes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：matrixmatrices; directrixdirectrices; calixcalices; appendixappendices 反例：affixaffixes九、以-um结尾的名词，将-um改变为-a。读音变化：去掉鼻尾音。例：forumfora; stadiumstadia; aquariumaquaria; datumdata; vacuumvacua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：larvalarv
5、ae; formulaformulae; alaalae; mediamediae; hydrahydrae十一、部分单词的复数形式不变。读音变化：保持原音。例：fishfish; sheepsheep; cattlecattle; deerdeer; salmonsalmon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：manmen; womanwomen; childchildren; personpeople; oxoxen十三、一些单数词得加en才能变成复数词：例：oxoxen; childchildren; brotherbrethren十四、一些单数词得改头换面
6、一番,才能变成复数词例：analysisanalyses分析; basisbases基础; datumdata数据; footfeet;formulaformulae/formulas公式; goosegeese; louselice虱子; manmenmousemice; mediummedia/mediums媒介; memorandummemoranda/memorandums备忘录;parenthesisparentheses 圆括号; phenomenonphenomena现象; radiusradii 半径toothteeth; womanwomen十五、有些名词是单数、复数不分的例
7、：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、compound nouns，这类
8、复数词是以主要的名词来表示例：daughter-in-lawdaughters-in-law 媳妇; father-in-lawfathers-in-law岳父man-of-warmen-of-war兵舰; maid-servantmaid-servantsstep-sonstep-sons晚子; son-in-lawsons-in-law十九、若表达具体数目，要借助数量词例：pair(对，双); suit(套); a pair of glasses; two pairs of trousers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，fish
9、es（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：a dollar, two dollars; a meter, two meters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”结尾词如:videos,radios,studios,folios2.一些外来词，特别是音乐方面的如：pi
10、anos,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_ ro
11、of_ 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 _用所给的单词的复数的正确形式填空：1）There are so many_(wolf)in the forest.2）There
12、are three _(chair) in the classroom.3）These _(tomato) are red.4）_(hero) are great.5）My brother looks after two _(baby)6）There are some _(deer) eating the grass.7）My father likes to eat _(potato).8）Chinese _(people)like to eat noodles.9）I have a lot of _(toy) in my bedroom.10）I help my mother wash _(
13、dish) in the kitchen.11）I have two _(pencil-box).12）There are some _(bus)in the street.13）Peter has eight _(foot).14）Linda has three _(tooth).15）There are some _(child) in the garden.16Michael likes the _(mouse).17）There are some _(goose)in the river.18）My uncle and father are _(man).19）Tom and King are _(boy).20）Linda has three _(tooth).
