三个不同程度的需要。简单地举例如下：1,I need to see a doctor, coz I have very bad headache. 迫切需要的，一般是马上会采取行动。2,I want to learn Chinese, coz I am going to China the end of this year. 需要的，不一定立刻采取行动3,I would like to travel around the world when I finish my school. 希望的，但行动可能性占得比列没有以上两个大。...
