__with the book I bought yesterday,the one borrowed from the libray doesn't seem interesting.

__with the book I bought yesterday,the one borrowed from the libray doesn't seem interesting.

While这里的意思是：当。。。的时候。

实际上这里考的不是while，而是分词。主语是the one， 也就是书，而不是人。只有人能主动地去比较，所以出现comparing 的选项都是不对的。

书只能被比较，分词要用被动形式compared. 选A.

希望能够帮到你！

应该选A吧。
不看when 还是While,而是看逻辑主语。句子主语是the one,那么它与compare应该是被动关系，所以应该是compared, the one was compared with the book.

因为这里省略了it is ,
完整句子是When it is compared with the book I bought yesterday,the one borrowed from the libray doesn't seem interesting.===The one borrowed from the libray doesn't seem interesting when it is comparedwith the book I bought yesterday.
当与我昨天买的那书相比时，我从图书馆借来的那本似乎不怎么吸引人了。

it是代词，指的就是The one borrowed from the libray ，从图书馆借来的那本书
因为句子的主语是The one borrowed from the libray ，而后面也是同样的主语，这时候相同的主语可以 省略，所以就变成了when compared with....

compared这里是 ed形式，有被动的意味，一般主语是物，例如这里的book
而comparing 是ing形式，有主动的意味，一般主语是人，而且直接是comparing sth.

例如Whilecomparingthe book I bought yesterday, I found the one borrowed from the libray doesn't seem interesting.=======I found the one borrowed from the libray doesn't seem interestingwhile comparingthe book I bought yesterday,这里主语就是人。

C 跟B类似，应该是Comparing the book I bought yesterday, I found the one borrowed from the libray doesn't seem interesting