...at,in,on,with,of,for,from,about,by,with的用法,还有定语从句_百度...答:所以填which 或者that都没有问题,那么下面一句i played the days with my classmates, 显然我们没有见到我这样的句子结构,是不对的,i played with my classmates in the days. 是可以的,所以下面的句子当中把the days用which指代之后还少个in 所以出现了in which也就是介词加which的用法 ...