It's an english book.复数形式为什么是They are English books

It's an english book.复数形式 it's an English book.English 在句中的作用 It's an English book.（改为复数句） It‘s an English book.（前面的问句） This is a book,It's an English book.What's this?急. --It's a book.__ English book.A.A B.An C.The Oh,it's my( ).1、book 2、dictionary It's an English dictionary. Put_____English book into your bag.It's not_______ English book.It's my Chinese book.A.an,the B,the,an C./,an D.the,the It's an english book.复数形式为什么是They are English books It's an interesting book look at _ book,it's _____ english book.a.the.the b.an the c.the an. It is an English book.（复数） It is an English book . 肯定回答 It's my an English book如果是错的,怎么样是对的?（词不换) 完成下列短文 　　Maria is ( ) an English book .She ( ) English very much .Because she ( ) it’s ( )完成下列短文　　Maria is ( ) an English book .She ( ) English very much .Because she ( ) it’s ( ) and ( ).But Zhou Yan ( ) like it v There's an English book over there.An English book is Tom's.哪里错了? Excuse me,what's that () English?It's ()English book. It's an interesting book.改为感叹句