句型轉(zhuǎn)換 Are these your pencil-boxes?(改為單數(shù)形式） ___ ___ your___?
We are in Class Three、Grade one .（對(duì)Class Three、Grade one進(jìn)行提問(wèn)）
___ ___are you in?
That is'n an old book.(改為復(fù)數(shù)形式）
__ __old____
We can see it.(改為否定句）
We __ __it.
We are in the same class(改為一般問(wèn)句）
__ __in the same class?
將下列句子改為復(fù)數(shù)
This is my box.
That is your clock.
It is an apple.
He's a teacher.
Is that an orange?