小学英语单数的句子变成复数的句子

　　把单数的句子成复数的句子：

　　变法是把能变成复数的词变成复数，但a或an要把去掉。特殊疑问

　　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,I'm an English teather ------We are English teathers

　　7,It's a new shirt---- They are new shirts

　　8,He's a boy ----They are boys

　　9,She's a singer ------They are singers

　　10,What's this in English?---- What are these in English?