1、1单数句变复数句六绝招单数句变复数句是七年级英语试题中的一个题类，小学英语一般很少涉猎，进入初中，有的同学在做类似题时往往丢三落四，容易出错。只要注意下面的六要素，问题便迎刃而解：1人称代词主格单数变成相应的人称代词主格复数，即 Iwe;youyou;she,he,itthey。 如：She is a girl. They are girls.2 am, is 变为 are。 如：Im a student. We are students.3不定冠词 a, an 要去掉。如：He is a boy. They are boys.4普通单数名词要变为复数形式。如：It is a cat. The
2、y are cats.5指示代词 this, that 变为 these, those。如：This is a book. These are books.6 man, woman 作定语修饰可数名词时，要在 “数“ 上与被修饰名词保持一致。但其他名词修饰名词表示 “性质“ 时，不作变化。如：He is a man doctor.They are men doctors.This is an apple tree.They are apple trees.记住单数句变复数句的口诀。单数句子变复数，变化规则要记住。 名词代词要变化，am, is 要变 are。 this, that 该咋办，th
3、ese, those 替代它。 he, she, it 要变啥，全部变 they 就行了。 I 要变 we 别落下，名词后面把 s/es 加。 名前冠词去掉它，其余成分原样加。但是，在英语中有些单数句不能变为复数句，如：Lily is fourteen.(莉莉十四岁。)His name is Jim.(他的名字叫吉姆。)等。单数句变复数句练与析安徽巢湖 万小泉同学们都会把单数可数名词变为复数形式，可当我们在做“将单数句变为复数句”这种题目时，常常会“顾此失彼” ，出现不少错误。你难道不例外吗？那就 Have a try！【练习展示】将下列单数句改为复数句。1. This is a chair.
4、2. Is that a pencil-box?3. He is a good boy.24. Is it a ruler ?5. I am an English teacher.6. This is my new book.7. That blue eraser is mine.8. Whats this in English?9. I am a driver.10. She has a pencil sharpener.11. Is it a pear ?12. This is my pen.13. He likes his bike.14. Is that an apple tree?1
5、5. He is a man doctor.16. Whats your telephone number?17. Where is your computer?18. Are you in Class One?19. -Is that his brother? -No, it isnt.20. -Is she my teacher? -Yes, she is.21. I am at home.22. He can have a look at this picture.上面练习做得还顺手吗？还是看看专家是如何解析吧！【专家解析】单数句变复数句涉及名词和动词的人称和数，人称代词、物主代词、指示
6、代词的人称和数的问题。单数句变为复数句时，上述各类词都要做相应变化，其它词类不变。当然，也有一些特殊的情况。1. These are (some) chairs.2. Are those (any) pencil-boxes?在把单数句子变为复数句子时，指示代词需要作相应的变化：thisthese, thatthese 。第 1、2 小题即是如此。3. They are (some) good boys.4. Are they (any) rulers?5. We are English teachers.在把单数句子变为复数句子时，人称代词需要作相应的变化：主格：Iwe, youyou, h
7、e/she/itthey宾格：meus, youyou, him/her/itthem。第 3、4、5 小题即是如此。6. These are our (my) new books.7. Those blue erasers are ours.在把单数句子变为复数句子时，物主代词需要作相应的变化：形容词性物主代词：myour, youryour, his/her/itstheir名词性物主代词：mineours, yours yours, his/her/itstheirs。第 6、7 小题即是如此。8. What are these in English?9. We are (some) d
8、rivers.在把单数句子变为复数句子时，连系动词 be 需要作相应的变化：(be)am/isare。第 8、9 小题即是如此。310. They have (some) pencil sharpeners.11. Are they (any) pears?a/an 表示“一个” ，只能用在单数可数名词之前，在把单数句子变为复数句子时，一定要把 a/an 去掉，或改为 some/any。第 10、11 小题即是如此。12. These are my pens.13. They like their bikes.在把单数句子变为复数句子时，一般情况下，形容词性物主代词不需要改为复数形式。第 12
9、 小题即是如此；但是当句中形容词性物主代词与句中的主语一致时，该物主代词应随主语人称的改变而变化，仍要保持一致。第 13 小题即是如此。14. Are those (any) apple trees.15. They are (some) men doctors.在把单数句子变为复数句子时，起修饰作用(作定语) 的名词一般保持不变，只将其后的名词改为复数形式。第 14 小题(如 apple)即是如此；但是，若 man 或 woman 做定语修饰可数名词时，在整个句子变成复数的情况下也要变成 men 或 women。第 15 小题即是如此。16. What are your telephone
10、numbers？17. Where are your computers？18. Are you in Class One?在把单数句子变为复数句子时，第二人称形容词性物主代词 your 与其人称代词 you 单复数同形，因此只需要改变其他部分的单复数形式即可。如第 16、17、18 小题即是。19. -Are those their brothers? -No, they arent.20. -Are they our teachers? -Yes, they are.在把单数句子变为复数句子时，句式不能改变，即单数句子是疑问句，变为复数句子时仍然是疑问句。第 19、20 小题即是。21.
11、We are at home.22. They can have a look at these pictures.凡事都有特殊情况，在把单数句子变为复数句子时，一些固定短语(如 at home，have a look 等)中的单数可数名词是不可以改变的，仍然保留原先的单数形式。如第 21 小题中的home，第 22 小题中的 look 即是如此。【解题口诀】当同学们掌握了名词变复数的基本方法之后，再记住下面的口诀。相信单数句变复数句这一语法难点便会迎刃而解。 单数句子变复数，变化规则要记住。 名词代词要变化，am, is 要变 are。 this, that 变成啥，these, those
12、 来替它。 he, she, it 要变啥，全部变 they 不用怕。 I 变 we 莫落下，名词后面把-s/-es 加。 名前冠词去掉它，其余成分原样加。名词定语别管它，man 与 woman 是例外。一般规则照着用，固定短语分清楚。单数句变复数句单数句变复数句歌谣：单数句变复数句, 代词四变要记住。4人称,指示,反身变 物主代词看一看。连系动词 am is 变成 are。冠词 a an 要去掉，改为 some,any 也可以。名词做定语，介宾不要变；有 man 和 woman 也例外。句式不要变，十全十美题做完。1 人称代词由单数变复数：1 主格 I we ，you you ，he/she
13、/it they .2 宾格 me us ，you you ，him/her/it them .例 1 She is a girl . They are girls .例 2 I like her. We like them.2 指示代词由单数变复数： this these ， that those例 1 This is a book . These are（some）books .例 2 Is that a pen？ Are those（any）pens？3 反身代词： 第一人称 myself ourselves 第二人称 yourself yourselves 第三人称 himself t
14、hemselves ( herself, itself )例 1 I am teaching myself computer. We are teaching ourself computer.例 2 The child himself draws this picture. The children themselves draw these pictures. 4 物主代词由单数变复数：1 名词性物主代词：mine ours ，yours yours ，his/hers/its theirs2 形容词性物主代词：my our，your your ，his/her/its their例 1
15、The book is mine. The books are ours.例 2 This is her pen. These are their pens.5 一般情况下，形容词性物主代词在单数句变复数句时不变。例 1 This is my book . These are my books .6 当句中形容词性物主代词与句中的主语一致时，形容词性物主代词应随主语人称的变化而变化， 仍要保持一致。例 1 He likes his bike. They like their bikes.7 连系动词由单数变复数 ：is/am are例 1 I am a teacher. We are（some
16、） teachers.8 a/an 表示一个，只能用在单数名词前，当单数句变复数句时，一定要把 a/an 去掉，或改为 some/any。例 1 This is a book . These are（some）books .例 2 Is that a pen？ Are those（any）pens？9 当名词作定语或在介词短语中作介词宾语充当除宾语以外的其它成分时， 该名词不变。例 1 He is a boy student .They are（some）boy students.（man 和 woman）除外。5例 2 She is a woman worker.They are（some
17、）women workers.10 单数句变为复数句时，句式不能改变，即单数句是疑问句时，变为复数句时，仍然是疑问句。例 1 Whats this？ What are these？例 2 She likes his bike. They like their bikes.可数名词的复数形式的部分规则1 一般情况加 s，结尾是清辅音读s，结尾是浊辅音或元音读 z。例：friendfriends; cat cats; style styles; sportsports;piecepieces2 以 s、x、ch、sh 结尾的词，在该词末尾加上后辍-es 构成复数。读iz。例：busbuses; q
18、uizquizzes; foxfoxes;matchmatches; flashflashes3 以辅音字母+y 结尾的名词，将 y 改变为 i，再加-es。读z。例：candycandies; daisydaisies; fairyfairies;ladyladies; storystories4 以-o 结尾的名词，有生命的加 -es，无生命的加-s 构成复数。读z。例：tomatotomatoes; potatopotatoes;torpedotorpedoes;bingobingoes （有生命）例：silosilos; pianopianos;photo photos; macrom
19、acros（无生命）5 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：knifeknives; lifelives; leafleaves; staff staves;scarfscarves 反例：roofroofs6 以-ce se ze（d）ge 等结尾的名词，加-s ，读z 。例 priceprices casecases orangeoranges名词的不规则变化：manmen; womanwomen; childchildren; peoplepeople;fishfish; sheepsheep; deerdeer;
20、 footfeet;mousemice; toothteeth;单数句变复数句精炼一 将下列单数句变为复数句1 This is a book .2 Is that a pen？3 She is a girl .4 I like her.5 The book is mine.6 This is her pen.7 I am a teacher.8 He is a boy student .69 She is a woman worker.10 He likes his bike.二 将下列复数句变为单数句1 What are these？2 They like their bikes.3 The
21、se are my books .4 These are（some）books .5 Are those（any ）pens ？6 They are girls .7 We like them.8 These are（some）books .9 Are those（any ）pens ？10They like my bikes.三 将下列名词变为复数形式map egg apple orange pen box bus girl boy baby knife photo tomato man womanmilk water desk table bike单数句变复数句精炼答案一 将下列单数句变为
22、复数句1 These are（some）books .2 Are those（any）pens ？3 They are girls .4 We like them.5 The books are ours.6 These are their pens.7 We are（some） teachers.8 They are（some）boy students.9 They are（some）women workers.10 They like their bikes.二 将下列复数句变为单数句1 What is this？2 He likes his bike3 This is my book .4 This is a book .5 Is that a pen？6 She is a girl .7 I like her.8 This is a book 9 Is that a pen？10 He likes my bike.三 将下列名词变为复数形式maps eggs apples oranges pens boxes buses girls boys babies 7knives photos tomatoes men womenmilk water desks tables bikes
