一、概念：表示将要发生的动作或存在的状态及打算、计划或准备做某事。句中一般有以下时间状语：tomorrow, next day(week, month, year…),soon, the day after tomorrow（后天）等。
①be going to + do；
三、否定句：在be动词（am, is, are）l后加not或情态动词will后加not成won’t。
例如：I’m going to have a picnic this afternoon.→ I’m not going to have a picnic this afternoon.
四、一般疑问句：be或will提到句首，some改为any, and改为or，第一二人称互换。 例如：We are going to go on an outing this weekend. → Are you going to go on an outing this weekend?
1.问人。Who 例如：I’m going to New York soon. →Who’s going to New York soon.
2.问干什么。What … do.例如： My father is going to watch a race with me this afternoon. →What is your father going to do with you this afternoon.
3. 问什么时候。When.例如：She’s going to go to bed at nine. →When is she going to bed?
六、同义句：be going to = will
I am going to go swimming tomorrow（明天）. = I will go swimming tomorrow.