1、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。

2、基本结构：

①be going to + do。

②will+ do。

3、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。

4、一般疑问句： be或will提到句首，some改为any, and改为or，靠前二人称互换。

例如：We are going to go on an outing this weekend. → Are you going to go on an outing this weekend。