poor的比较级和最高级分别是什么

　　例句：

　　She may be successful now, but she has known what it is like to be poor.

　　她现在可能成功了，但她尝过贫穷的'滋味。

　　Do you have any idea what it means to be poor?

　　你知不知道贫穷意味着什么？

　　Don't strain your eyes by reading in poor light.

　　别在光线差的地方看书把眼睛给伤了。