Question

I'll never forget the days that/which we spent together.

I'll never forget the days when we stayed together. 这两个句子有什么区别啊？为什么引导词不一样?
急急急。。。。。。。。。。在线的。。。。。。。解释清楚点。谢了

Answer 1

that/which 跟事物后 永难忘一起的日子 强调时候
when 时间后 永难忘一起的时光 强调在一起的感受

所以强调不同

Answer 2

1. 此句I'll never forget the days that/which we spent together.是个定语从句，其中先行词days做spent的宾语。此处只能用that/which。
2. I'll never forget the days when we stayed together. 此句中先行词days在从句when we stayed together。中做时间状语。只能用when，不用that/which。