some book的“book”后面加s吗?

some book的“book”后面加s吗? some kinds of book中的book是不是一定要加s? no book 的book要加s吗? any book,与some book的辨析 some.book. these are book and ruler 里面里的book和ruler 需要加s吗 英语中,book store,book要加s吗 a book collection中的book加s吗 This is a book of Mary's. of不就是代表‘...的’的意思么?为什么后面的Mary后面还加's?求解... They are books.book为什么加s 英语请教she is reading story books为什么book后面要加S啊,s的意思是复数,他在读很多本故事书吗? they are 后面能加some It is a book.复数可以变they are some books 不是there are 是they are我知道there are 后面要加some我问的是they are后面要加some吗？ her book与she's book的区别 What's this book China's history在book后面填介词 is it some book? i reading a book.的i后面为什么要加am? written by 和written的区别Who was the book written 后面为什么不能加by? borrow some book还是borrow any book