The old man has two sons,__are lawyers.A.both of them B.both of whom,选A还是B

问题描述:

The old man has two sons,__are lawyers.A.both of them B.both of whom,选A还是B

B能否解释一下?前句已有谓语动词,后面必须是从句,既是从句就要有引导词,后句是以whom 引导的定语从句,修饰先行词two sons如果我选A的话,错在哪,也没错啊.若选A 则逗号前后各是一句话。而英语中两句话放在一起不能用逗号连接,要么用分号,要么用并列连词and 等,要么用从句。这里用的就是从句。