We are having fish for dinner.
We are moving to a different hotel the day after tomorrow.
A: Where are you going? B: I am going for a walk. Are you coming with me?
A: Yes，I am just coming. Wait for me.
2．用be going to do表示将来：主要意义，一是表示“意图”，即打算在最近的将来或将来进行某事。
Are you going to post that letter?
How long is he going to stay here?
I am going to book a ticket.
It’s going to rain.
George is putting on weight; he is going to be quite fat.
3. 用will/ shall do表示将来：
You will feel better after taking this medicine.
Do you think it will rain?
I will not lend the book to you.
Take it easy，I will not do it any longer.
基本结构：She will come to have class tomorrow.
Will she come to have class tomorrow?
She won’t come to have class tomorrow.
What will she do tomorrow?
肯定形式：①am/is/are going to + do；②will/shall + do.
否定形式：①am/is/are going not to + do；②will/shall not + do.