going to+地名、动词going+方位移动的动词going是go的进形式意思是"去"例：:Where are you going 你要去哪里I'm going to Shanghai.我将要去上海。

We'regoingsailing on Saturday.我们打算星期六乘帆船出游。I'mgoingaway onbusiness.我准备出趟差。What+be动词+going to +动词原形+ =你准备去做什么 列:What are you going to do (你准备去做什么 )I'm going to do the high jump.(我准备跳高.)to 是介词后面要接宾语,地点之类的没有to就接副词，比如homeI'll stop by to see Leigh beforegoing home.我回家前将顺道去看望一下利。They're pleased to begoing home.就要回家了，他们很高兴。It may rain tomorrow, but we aregoing homein any case.明天可能下雨, 但不管怎样,我们打算回家去.

be going to （do）的时候表示将要做某事 （而且一般为计划好的事情）

going 是动名词（也可以是现在分词）