They are books.book为什么加s
They are books.book为什么加s
It's an english book.复数形式为什么是They are English books
My books are on the shelf. 为什么BOOK+S?
whose books are those next to the teacher's book?they are al
they are 后面能加some It is a book.复数可以变they are some books
为什么 different books 要加s 而 the same book 不加s?
——Whose book are these?——They`re( our )books 为什么是our?
Reading books in the sun is bad for your eyes 中book为什么加S
Are they your books?还是Are these your books?为什么?
they are good friends of ours.our为什么加s
Open your books and turn to page 20.为什么这里的book要加s?什么情况下要加s?动
Are these the children's books? children's 前面为什么加定冠词the ?