be going to 是英语未来时的另一种体现方式,等同 will
因此可以如此理be going to be = will be; be going to do = will do
1）be going to be 后面可以加形容词,也可以加名词,或其他词组.
例如：
You are going to be late = You will be late.
They are going to be there = They will be there.
He is going to be the president of the United States = He will be the president ...
2）be going to do 这里的 do 可以是任何动词,表达某人将要做的事.
例如：
I am going to play soccer with them = I will play soccer with them.
He is going to love this gift= He will love this gift.
We are going to leave at 7am = We will leave at 7am