what,where,who与which的互换

问题描述:

what,where,who与which的互换

what用在句子中既可以做主语又可以做宾语,如 I found what was wrong.做found的宾语和was的主语 where在定语从句中后加的句子是完整的,如 It is the factory where he worked.Work 不及物可以看做完整的句子who代替...