Question

When I went to shopping the other day.和WhileI went to shopping the other day.哪句话是对的？

Answer 1

哪句话都不对。正确的说法是
When I went shopping the other day...
（1）go shopping中间不能加to；
（2）when引导的只是时间状语从句，你所提供的例子没有主句；
（3）go shopping是短暂性动词，要用when引导，而不能用while引导。从这点来看，前一个例子更接近正确的说法。

Answer 2

When I went to shopping the other day，这一句肯定是对的。
while 后面一般跟着进行时的句子。