it is a book改为一般疑问句
it is a book改为一般疑问句为Is it a book?
双语例句:
1、It is very hard to break a code without the code book.
没有密码本是很难破解密码的。
2、However, it is also hard to keep a code book secret for long.
然而,也很难长期保持密码本的秘密。
3、It is a book of nearly 100,000 words.
全书近十万言。
4、It is a fairly good book.
这是相当好的书。
5、It is a book that I know you will enjoy and one that I can highly recommend to students of the time and enthusiasts alike.
这是一本书,我知道你会享受之一,我可以推荐给学生的时间和爱好者的欢迎。
一般疑问句的用法:
一般疑问句:以be动词,have/has/do等助动词、can/may等情态动词开头,以yes或no来回答的问句。它的基本结构是:Be/Have/Has/Did等助动词(包括情态动词)+主语+谓语(包括表语)回答常用简略回答。
谓语动词是be动词、助动词、情态动词时,只要直接把这些词置于句首,句末改成问号。谓语动词是行为动词时,必须在句首加上助动词Do、Does(三单)、Did(过去式)加上这些助动词后,句子中谓语动词必须用原形。