where are your books?——they are there.改为缩写形式
--Where.are.your.books?--They.are.in
they are English books.(改为单数形式)
There are English books.(改为单数形式)
are these your books?改为单数形式
where are your books?
they are(改为缩写形式)____________
they are(缩写形式)
they are your sons改为单数形式
How many books are there in your () —There are two books.
they are的缩写形式,you are缩写形式,your name is的缩写形式,that is的缩写形式
where are的缩写形式
They are English books (5改为单数形式)