是it is worth while还是it is worthwhile对?

是it is worth while还是it is worthwhile对? 英语翻译It is definitely worthwhile. It is worth well to do sth/doing sth对吗?是不是worthwhile啊? it is worth of doing xxx 还是 it is worth doingxxx 怎么我看见有worth It is worth while reading the book.It would be worth his whi it is worth it is worth nothing 对我们来说做这件事情是很值得的用(it is worthwhile) is it worth it though It's worth while 后面是to do 还是doing It is worth trying.这里的worth是介词吗 I wonder it is worth?