单数-复数句型转换讲解部分

单数句变复数句辅导版权--必须让孩子复习并掌握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：bag→ bags hat →hats; bottle→ bottles sport→sportspiece →pieces book—books shirt—shirts pant—pants 2. 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：bus→ buses fox → foxes; match→ matches watch →watches3. 以辅音字母+y结尾的名词，将y改变为i，再加- es,读[z]。

candy→ candies; factory→ factories city→ cities baby--babieslady→ ladies; story→ stories butterfly--butterflies4.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：tomato→ tomatoes ; potato→ potatoespiano→ pianos photo→ photos（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：knife→ knives life→ lives leaf→ leaves wife—wives wolf—wolvesscarf→ scarves/ scarfs 反例：roof→ roofs6 以-ce se ze（d）ge等结尾的名词，加-s，读[z]。

price—prices case—cases orange—oranges bridge--bridges名词的不规则变化：man→ men woman→ women child→ children people→peoplefish→ fish sheep→ sheep deer→ deer foot→ feetmouse→ mice tooth→ teeth goose—geese将下列名词变为复数形式map egg apple orange tomato potato photo zoo picturechairbox bus girl boy baby monkey wolf giraffe knife man womantable desk dictionary deer goat fish child foot tooth mousecola milk water coffee chicken fish cream juice tea单数句变复数句歌谣：单数句变复数句, 代词四变要记住。

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 。

一. 人称代词由单数变复数：1 主格 I --- we ，you --- you ，he/she/it --- they .2 宾格me--- us ，you--- you ，him/her/it --- them .She is a nice girl. ------ They are nice girls .I like him. ----- We like them.二． 指示代词由单数变复数：this ----these ， that--- thoseThis is an English book. These are（some）English books .Is that a new pencil？ Are those（any）newpencils？三． 反身代词： 第一人称 myself---ourselves 第二人称yourself---yourselves 第三人称 himself/ herself / itself ----themselvesI am teaching myself English. ---We are teaching ourselves English. The child herself draws this picture.--The children themselves draw these pictures.四. 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 -----theirThe book is mine.----- The books are ours.That is her pencil-case.---- Those are their pencil-cases.一般情况下，形容词性物主代词在单数句变复数句时不变。

This is my book . ---- These are my books .五．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。

He likes his bike. ----- They like their bikes.六. 连系动词由单数变复数 ：is/am ---- areI am a Chinese teacher.----- We are（some）Chinese teachers.七． 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。

This is an orange. ---These are（some）oranges.Is that an eraser ？ --- Are those（any）erasers？八． 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。

He is a boy student.------They are（some）boy students.（man和woman）除外。

She is a woman worker.---Theyare（some）women workers.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。

What’s this？---- What are these？She likes her watch. They like their watches.下面是我摘录的内容（大同小异），供参考：1. 可数名词单数要变为其相应的复数形式｡例如: I am a teacher.→We are teachers. It is a box.→They are boxes.2. 人称代词主格要由单数形式变为复数形式,即:I→we,you→you (you的单数形式和复数形式相同),he (she,it)→they｡例如: I am a student.→We are students. She is a girl.→They are girls.3. am, is要变为are｡例如: I am in Grade One.→We are in Grade One. He is a teacher.→They are teachers.4. 指示代词this和that要分别变为these或those｡例如: This is a pencil-case.→These are pencil-cases. That is an English car.→Those are English cars.5. 不定冠词a/an要去掉｡例如: It is a black cat.→They are black cats. She is an English teacher.→They are English Teachers.6. man或woman作定语修饰可数名词时,在整个句子变成复数句的情况下,也要变为复数形式men､women｡例如: She is a woman doctor.→They are women doctors. 注意:在单数句变为复数句时,普通单数可数名词要变为复数形式,但当名词修饰名词表示“性质”时,作修饰语的名词不必变化｡例如: This is an apple tree. 这是一棵苹果树｡→These are apple trees.这些是苹果树｡ 6+1. 单数句变复数句时,句中的形容词､定冠词､副词､疑问词､介词短语和感叹词等都保持不变｡例如: Who is she? 她是谁?→Who are they? 他们是谁? He is young. 他年轻｡→They are young. 他们年轻｡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 box.2 Is that a pear？3 She is a girl student.4 I like her.5 The book is mine.6 This is her sweater.7 I am a woman teacher.8 He is a man doctor.9 She is an English girl.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 old bikes.3 These are my Chinese dictionaries.4 These are（some）oranges.5 Are those（any）sheep？6 They are white teeth.7 We like them.8 These are（some）knives.9 Are those（any）pink scarves？10. They like their babies.单数句变复数句精炼答案一 将下列单数句变为复数句1.This is a box.--- These are（some）boxes .2.Is that a pear？--Are those（any）pears？3. She is a girl student. –They are girl students.4. I like her.—We like them.5. The book is mine.---The books are ours.6. This is her sweater.—These are their sweaters.7. I am a woman teacher.--We are（some）women teachers.8. He is a man doctor.--- They are（some）men doctors.9. She is an English girl.--- They are (some) English girls.10. He likes his bike.--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 his computer.。