主语从句Which should be chosen remains unknown.可否改为It remains unknown which should be chosen.

问题描述:

主语从句Which should be chosen remains unknown.可否改为It remains unknown which should be chosen.

可以

完全可以,第一句用的是which引导的主语从句;
第二句用的是it做形式主语,真正主语还是which should be chosen

改法没有错,不过句子本身是错误的.如果没有上下文语境,which无法独立引导主语从句后面要接名词或代词即:which + 名词/代词 Which + 名词/代词 should be chosen remains unknown--It remains unknown which + 名词/...