My hobby is to play chess

问题描述:

My hobby is to play chess
为什么这里可以用to,这是什么结构,能不能将to提前

动词不定式短语to play chess作联系动词is的表语,不能将to提前
如:Qu Yuan's job was to give advice to the king.
My wish is to be a doctor.
Our homework today is to do Exercise 1