These are orange oranges .否定句.一般疑问句 .

These aren't orange oranges.
Are these orange oranges?
These are hands.
They are students.(这个本来就是复数啦）
Are you twelve years old?
There aren't many book in the classroom.
Are there any book in the classroom
There isn't an earser on the desl.
Is there an eraser onthe desk

否定句:These aren't orangr oranges.
一般疑问句Are these orange oranges?
复数：These are hands.
How old are you?
否定句:There aren't many books in the classroom.
一般疑问句Are there many books in the classroom?
否定句:There isn't an eraser on the desk .
一般疑问句:Is there an eraser on the desk ？
They are students. (改为复数)它本来就是复数啊.....
单数：This is student.

否定句:These aren't orangr oranges.
一般疑问句Are these orange oranges?
复数：These are hands.
How old are you?
否定句:There aren't many book in the classroom.
一般疑问句Are there many book in the classroom?
否定句:There isn't an eras