育才学习网1.英语的单复数是怎么意思
在英语中，名词都有单复数的变化。单数表示“一”，复数表示“多于一”的概念。也就是通过一个单词，以（an）apple 出现，你就知道一定是一个，而apples出现，一定是多余一个，都不需要别人告诉你是几个。
名词的复数一般都是在名词后面加s，以发咝擦音的ch,sh,ge,z,s结尾时，要加es，以辅音字母加y结尾的名词，则要把y去i再加上es。
还有一些不规则的词，比如police，看上去是单数，但是却会以复数对待，认为police是一个整体。他们叫集体名词。
在一般现在时中，单数的名词就意味着动词也要变化成单数的形式。这就是所谓的“三单”。
2.怎么用英语单复数写作文
并列结构作主语时与谓语的一致关系 a） 由and连接两个名词或者代词作主语时 A and B分为以下四种情况： i. A、B表示不同的人、物或者观念的时候，谓语动词要用复数形式 Li Ming and Zhang Hua are good students. Both the parents and the children are here. ii. A、B表示同一个人、物或者观念的时候，谓语动词要用单数形式 A journalist and author lives in the sixth flat. The turner and fitter is under twenty-five. iii. And连接几个单数主语，主语由each、every、no、many等词修饰的时候，谓 语动词要用单数 Each boy and each girl is invited. Every boy and girl is invited. No boy and no girl is there now. iv. A、B为两个不可分的东西时，谓语动词用单数 A law and rule about protecting environment has been drawn up. Bread and butter is nutritious. b） 由or, not only……but also……， either……or……， neither……nor……连接主语时，谓语的人称和数与靠近的主语一致（注意，叙述句和疑问句随语序不同而不同） Either you or I am mad. Neither you nor he is naughty. Not only the farmer but also his family were friendly to me. c） 当主语后跟有with, along with, together with, besides, except, like, including, as well as, rather than等词的时候，谓语动词不受词组的影响，仅和主语保持一致 All but one were here just now. A library with five thousand books is offered to nation as a gift. 2. 单一主语的情况 a） 以复数形式结尾的名词作主语时，例如physics, maths, economics, news, means, works， 等一般在谓语动词中用单数形式， 当然，若表示复数的意思则另当别论 Physics is very important. Every means has been tried. b） 表示双部分工具的名称，衣服名称等作主语时，例如trousers/pants, shoes, glasses, scissors, goods, clothers等，谓语用复数形式；如果这些词由Pair(suit, piece, series,kind)+ of修饰的时候，谓语动词要用单数 My trousers are white and his clothes are black. A pair of scissors is lying in that drawer. 但是在these/those pairs （…） of + 复数名词之后，谓语动词则用复数形式 These kinds of glasses are popular this summer. 3. 动名词，不定式，从句作主语的时候，谓语动词一般要用单数 To see is to believe. Swimming is a good way to keep health. Who is her father is not known. 4. 集体名词作主语时 a) mankind/humanity/man（人类）作主语的时候，谓语动词一般用单数形式 Only man is knows how to cook. b） 由people, police, cattle, youth等集体名词作主语的时候，谓语动词用复数形式 The cattle are grazing in the field. c) Family, croud, class, public, enemy等集体名词作主语的时候 i. 若当整体看，则谓语动词用单数形式 Our class is very diligent. ii. 若他们表示的人或者事物当作若干个个体来看，谓语动词则用复数形式 When I came into the room, his family were watching TV. iii. A family/group/class作主语时，谓语动词用单数 families/groups/classes作主语时，谓语动词用复数 A group is coming to the zoo.。
3.英文单词复数怎么写
名词的词形变化1.不规则复数形式1）来自古英语的复数形式，如：child---children foot---feet tooth---teeth goose---geese man---men woman---women mouse---mice louse---lice ox---oxen penny---pence analysis---analyses appendix---appendices parenthesis---parentheses basis---bases ellipsis---ellipses axis---axes hypothesis---hypotheses oasis---oases crisis----crises criterion---criteria phenomenon---phenomena datum---data medium---media bacterium---bacteria nucleus---nuclei fungus---fungi stimulus---stimuli alumnus---alumni focus---foci radius---radii terminus---termini larva---larvae alga---algae formula---formulae #当代美国英语中往往把data当做单数用，因此常见到复数形式datas.另外，lens是一个单数可数名词，其复数形式为lenses.1）词尾读音为[f]并以-f或0-fe结尾的名词复数形式有以下几种情况： a）规则形式：belief---beliefs chief----chiefs cliff----cliffs grief----griefs b）不规则形式，即把-f或-fe变成-v，再加-es，读音为[vz]:calf---calves half---halves leaf----leaves life----lives loaf---loaves self---shelves thief---thieves wife---wives wolf---wolves c）既可是规则形式又可是不规则形式：dwarf---dwarfs/dwarves hoof---hoofs/hoves scarf---scarfs/scarves wharf---wharfs/wharves3）词干以-o结尾的名次有三种情况：a）附属形式为-s：这类词包括缩略词kilos,photos；表示国籍或民族的词Filipinos,Eskimos以及radios,solos,sopranos,studios b）复数形式为-es，如：heroes,potatoes,tomatoes,Negroes.c）复数有规则的和不规则的两种形式，如：cargo---cargos/cargoes mosquito---mosquitos/mosquitoes volcano---volacbos/volcanoes2.单复数同形的名词 1）某些动物名词，如：deer,grouse,salmon,trout,carp,bison,sheep等2）以-ese或-ss结尾的表示民族或国籍的名词，如：Chinses,Japanese,Portuguese,Swiss,Vietnamese等3）某些以-s结尾的名词，如：barracks,corps,crossroads,gallows,headquarters,means,series,species,works等4）某些表示计量单位的名词，如：horsepower,hertz,kilohertz,li,mu等 其他一些名词，如：aircraft,spacercarft,craft,offspring等.其中请特别注意-s结尾的单复数同形的名词，它们是考试的重点！3.不可数名词 不可数名词前一般不需要加定冠词，永远不能加不定冠词！例如下列用法均属错误：the mathematics the banking a cloth an equipment 不可数名词作主语，谓语要用单数形式.如：Water is important.但如果不可数名词前面被piece,drop,set等词修饰时，谓语应该与piece,drop,set等的单复数形式保持一致 例如：Few drops of water are needed to save the flower.下面是典型的不可数名词，是应该熟记的！air,smoke,steam,vapor,hydrogen,oxygen,nitrogen,water,oil,soup,juice,ink。
4.怎么用英语单复数写作文
并列结构作主语时与谓语的一致关系 a） 由and连接两个名词或者代词作主语时 A and B分为以下四种情况： i. A、B表示不同的人、物或者观念的时候，谓语动词要用复数形式 Li Ming and Zhang Hua are good students. Both the parents and the children are here. ii. A、B表示同一个人、物或者观念的时候，谓语动词要用单数形式 A journalist and author lives in the sixth flat. The turner and fitter is under twenty-five. iii. And连接几个单数主语，主语由each、every、no、many等词修饰的时候，谓 语动词要用单数 Each boy and each girl is invited. Every boy and girl is invited. No boy and no girl is there now. iv. A、B为两个不可分的东西时，谓语动词用单数 A law and rule about protecting environment has been drawn up. Bread and butter is nutritious. b） 由or, not only……but also……， either……or……， neither……nor……连接主语时，谓语的人称和数与靠近的主语一致（注意，叙述句和疑问句随语序不同而不同） Either you or I am mad. Neither you nor he is naughty. Not only the farmer but also his family were friendly to me. c） 当主语后跟有with, along with, together with, besides, except, like, including, as well as, rather than等词的时候，谓语动词不受词组的影响，仅和主语保持一致 All but one were here just now. A library with five thousand books is offered to nation as a gift. 2. 单一主语的情况 a） 以复数形式结尾的名词作主语时，例如physics, maths, economics, news, means, works， 等一般在谓语动词中用单数形式， 当然，若表示复数的意思则另当别论 Physics is very important. Every means has been tried. b） 表示双部分工具的名称，衣服名称等作主语时，例如trousers/pants, shoes, glasses, scissors, goods, clothers等，谓语用复数形式；如果这些词由Pair(suit, piece, series,kind)+ of修饰的时候，谓语动词要用单数 My trousers are white and his clothes are black. A pair of scissors is lying in that drawer. 但是在these/those pairs （…） of + 复数名词之后，谓语动词则用复数形式 These kinds of glasses are popular this summer. 3. 动名词，不定式，从句作主语的时候，谓语动词一般要用单数 To see is to believe. Swimming is a good way to keep health. Who is her father is not known. 4. 集体名词作主语时 a) mankind/humanity/man（人类）作主语的时候，谓语动词一般用单数形式 Only man is knows how to cook. b） 由people, police, cattle, youth等集体名词作主语的时候，谓语动词用复数形式 The cattle are grazing in the field. c) Family, croud, class, public, enemy等集体名词作主语的时候 i. 若当整体看，则谓语动词用单数形式 Our class is very diligent. ii. 若他们表示的人或者事物当作若干个个体来看，谓语动词则用复数形式 When I came into the room, his family were watching TV. iii. A family/group/class作主语时，谓语动词用单数 families/groups/classes作主语时，谓语动词用复数 A group is coming to the zoo.。
5.英语怎么变复数形式
我们英语老师有给我们两张这样子的纸，上面的内容就是教我们如何把什么变成复数形式，发给你吧，希望这对你学习复数形式有帮助。
1.一般在名词词尾加-s。如：dog-dogs, house-houses, gram-grams.
2.以-o或-s,-sh, -ch及-x结尾的名词加-es构成其复数形式。如：tomato-tomatoes, kiss-kisses, watch-watches, box-boxes, bush-bushes.
3.有些以-o结尾，是外来语或缩写名词， 则加-s。如：piano-pianos, dynamo-dynamos, photo-photos, kimono-kimonos.
4.有些以-o结尾的名词，其-o前是元音字母则加-s。如：studio-studios, radio-radios.
以-oo结尾的名词只加-s。如：zoo-zoos。
5.以-y结尾的名词，且-y前是一个辅音字母，则把-y去掉，加-ies。如：baby-babies, university-universities, fly-flies, impurity-impurities.
如果以-y结尾的名词，-y前是一个元音字母，则直接加-s。如：boy-boys, donkey-donkeys.
6.以-f或-fe结尾的名词，一般将-f,-fe去掉，加-ves。如：wife-wives, wolf-wolves, calf-calves.
这类名词还有：life, knife, self, shelf, leaf, thief, sheaf, half等。
名词scarf, wharf, hoof, handkerchief的复数形式或加-s或去掉-f加-ves，即scarfs或scarves, wharfs或wharves, hoofs或hooves, handkerchiefs或handkerchieves。
也有些以-f或-fe结尾的名词只加-s。如：cliff-cliffs, belief-beliefs, safe-safes, roof-roofs, chief-chiefs等。
7.有些名词以改变元音构成其复数形式。如：man-men, woman-women, goose-geese, foot-feet, mouse-mice, louse-lice, tooth-teeth等。
child的复数为children, ox的复数为oxen。
8.有些表示生物的名词，其复数形式与单数相同。如：fish-fish, sheep-sheep, deer-deer。这类名词还有aircraft, means等
这只是一部分，不过这一部分应该够了。
6.英语名词复数变化规则
一、可数名词都有单数和复数之分。
一、规则的可数名词的复数变化规则：
1.一般情况加 s : book-- books mouth---mouths house---houses girl---girls
2.以 s 、sh 、ch 、x结尾的加 es : class--- classes box----boxes match----matches
3.辅音字母 + y结尾的变 y为 i加es: city---cities country----countries party----parties factory----factories
4.以 o 结尾的词 +es的只有以下词 ：heroes Negroes tomatoes potatoes zeroes/zeros
以 o 结尾并且词尾有两个元音字母 +s radios, zoos, bamboos ,(pianos ,kilos photos)
5.以f, fe 结尾的 变f或fe为v +es :
thief wife life knife wolf half leaf shelf
The thief's wife killed three wolves with some leaves and knives in half of her life.
二、名词词尾的读音规则：
A. 在[ p] [t] [k] [f]等清辅音后读[s] cups, hats, cakes, roofs
B. 在[s] [z] [∫] [t∫]等音后读[iz] glasses, faces, roses.
C.在其他情况下读作[z] beds days cities knives.
D.以th结尾的词原来读[ ] 加词尾后多数读[ ]
如： mouth—mouths path—paths ;
但是也有不变化的，如： month—months, ninth—ninths, youth—youths.
三、不规则的可数名词的变化规则：
1.man—men, woman—women, tooth—teeth, foot—feet, goose—geese child—children, mouse—mice,
2.单复数相同： sheep, deer, Chinese, Japanese Swiss.
3.以man, woman 修饰名词构成合成词时，两个词都变化.
man servant—men servants. (boy/girl students