单数句变复数句(附练习与答案)

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。

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：

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：

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 themselves

( hersel f, 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 theirs

2 形容词性物主代词：my our，your your ，his/her/its their

例1 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） 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。

例2 She is a woman worker.

They are（some）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 What’s 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：friend→friends; cat→cats; style→styles; sport→sports;

piece→pieces

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; quiz→quizzes; fox→foxes;

match→matches;flash→flashes

3 以辅音字母+y结尾的名词，将y改变为i，再加-es。读[z]。

例：candy→candies; daisy→daisies; fairy→fairies;

lady→ladies; story→stories

4 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→potatoes;

torpedo→torpedoes;bingo→bingoes （有生命）例：silo→silos; piano→pianos;

photo→photos; macro→macros（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; staff→staves;

scarf→scarves 反例：roof→roofs

6 以-ce se ze（d）ge等结尾的名词，加-s，读[z]。

例price—prices case—cases orange—oranges

名词的不规则变化：

man→men; woman→women; child→children; people→people;

fis h→fish; sheep→sheep; deer→deer; foot→feet;

mouse→mice; tooth→teeth;

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 .

9 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 These are my books .

4 These are（some）books .