日期:2011-01-19 10:15
This is for you to do.
This is for them to work out.
表明一個問題：how to ? when to?
What we want to know is when to start our work?
The question is how to go there?
評估：of 短語做表語
Reading without understanding is of no use.
This plan is of little practical value.
評估：prove 表語
The statement proved incorrect.
The plan proved a f