We won't finish the work until next week,(which/when)we won'

We won't finish the work until next week,(which/when)we won't be so busy。请全面解析。选项是when定语从句的关系代词在定语从句中要做句子成分(主语或宾语),而we won't be so busy句子完整,不需要主语或宾语的成分,只需要一个表【时间的状语】,所以选when。。 再问： 这整个句子是什么意思？ 再答： We won't finish the work until next week,(which/when)we won't be so busy。 句意是：“直到下个星期我们不那么忙时，我们才能完成这项工作”。