be going to后面为什么要加to

如题所述

1. be going to 结构表将来时 ,to 不能省略,后面要接动词原形

I am going to do my homework at home tomorrow.

2. go 用现在进行时表示将来时,

(1)be going to+地点

I am going to Beijing tomorrow.

(2)如果是副词就不用to

I am going there in ten minutes.我十分钟后去那儿。

(3)与go 搭配的短语也可没有to, go shopping\swimming\skating等

I am going shopping with my mother this sunday.这个星期天我打算和妈妈去购物。

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