✔ 最佳答案
版主說的沒錯, 舉例:
His dream is to be a doctor..........尚未成為醫生
To be a college student, you must study hard.............還不是大學生
Being a college student, you must sttudy hard...........身為大學生...
Mother to be.....快當媽了.
老登
2011-07-23 18:48:56 補充:
替樓上大大補充一句
Work needs to be done.