Question

be+going+to的句子和while+going+to的句子的区别？

Answer 1

be going to 的句子为一般将来时。

比如：I'm going to Beijing tomorrow.

I'm going to visit Beijing tomorrow.

while going to 则是一个使用了省略语法的时间状语从句。

比如：I met him while going to school.

我上学时遇见了他。