英语语法问题.It is worth （your） while reading/to read the book.请各位分析下这句话的语法结构.这是一个什么类型的句子,your 、while 的作用（在句子中的成分）?为什么既可用reading 又可以用to read?

我想问一下一个英语语法的问题.Is it worth it?这个句子有语病吗?这个句子翻译过来是不是 值不值得 的意思呢?worth是adj形容词吧,后面可以跟it的吗?请问正确应该怎样? it is worth 这句英语语法有没有问题?monthly salary is just worth such a piece of wall. is it worth it though... 英语语法：is it worth the risk?请问这句话有没错误 worth这里作adj?我怎么觉得是to It is worth noting that It is worth 100 yuan. question is whether it is worth doing. It is worth trying.这里的worth是介词吗 it is not worth anything中worth是什么词性 It is worth trying.这里的worth是介词吗 it is worth nothing 如题 it is worth nothing that翻译 it is worth that怎么翻译 It is worth the money.怎么译 It is worth to do还是doing I know it is worth at It is worth doing sth同义句