词、形容词、国家及地点通常不变。

Eg:把下列句子变成复数

1,I have a car----we have cars

2,He is an American boy.----They are American boys

3,It is a car----They are cars

4,This is an eraser----These are erasers

5,That is a backpsck-----Those are backpacks

6,Im an English teather------We are English teathers

7,Its a new shirt----They are new shirts

8,Hes a boy----They are boys

9,Shes a singer------They are singers

10,Whats this in English?----What are these in English?

四、小学英语名词的数语法

名词有单数和复数两种形式

1、名词的单数：表示一个人或一个事物

2、名词的复数：表示一个人以上的人或事物

名词复数的改变规律如下：

1、多数状况下在名词后面加S，s在清辅音后读【S】

2、以s,x,sh,ch为结尾的词在词尾加es,es读作【iz】

3、以f,fe为结尾的词去掉f或fe加ves，ves读作【vz】

4、以辅音加y结尾的词，变y为ies

5、以元音加y结尾的词，干脆加s

6、不规则改变

a变成e

Man-men

woman-women

policeman-policemen

Policewoman-policewomen

单复数同形

Chinese-chinese

Japanese-japanese

sheep-sheep

deer-deer

不规则改变

This这个these这些(复数)

that那个those那些(复数)

I我we我们(复数)

he他she她it它they他、它、她们(复数)

am，is是are(复数)

五、小学英语人称代词主格及宾格