Question

She is reading a book. 改为一般疑问句及否定句）？

Answer 1

一般疑问句:Is she reading a book? 否定句:She isn't reading book.

Answer 2

该句为一般现在时态，is reading，正在阅读，作谓语，改为疑问句为，Is she reading a book？改为否定句，She is not reading a book。

Answer 3

主系表结构的句子改为一般疑问句只需把系动词提前至句首，其他不变，即：
Is she reading a book?
将句子改为否定句只需在系动词后加not，缩写成isn't，即：
She isn't reading a book.

Answer 4

将Is提前到句首，就变成了一般疑问句。在is之后加上单词not，就变成了否定句。

Answer 5

一般疑问句:Is she reading a book？
否定回答:No ，she isn't.