定语从句不缺少主语和宾语的情况下,
先行词是表示地点的就用where,时间的就用when。但如果缺主语或宾语,那就要根据情况选用which,that等
关系代词了。例句如下:
1 He sold the factory which/that belonged his uncle.(从句没主语)
2 He sold the factory where I worked last year.(work是
不及物动词,不带 宾,所以不缺,主语是I,表地点用where)
3 I will remember the day which/that we spent together.(spend是及物动词,要跟宾,但没有跟,所以缺了一个宾,用关系代词)
4 I will remember the day when I joined the army.(主I宾army都有,不缺)
希望能帮助到你,望采纳!