He has two sons,1.and two of them are teachers.2.two of whom

来源：学生作业帮编辑：作业帮分类：英语作业时间：2024/05/15 04:46:56

He has two sons,1.and two of them are teachers.2.two of whom are teachers.
为什么1.用them,2.用whom
我的英语老师说：连接副,连接副,从缺主宾它不住
这个好像是连接代词哎...
再说了,哪里缺主语宾语了啊

1有并列连词and 用来并列两个相同成分,and之前是句子之后也得是一个完整句子,要有主谓宾 two of them 作主语,are teachers是系表结构
2没有并列连词,是一个主从复合句,前半句是主句,后半句是定语从句,要有关系代词或者关系副词引导,从句中are teachers是系表结构,two of whom 作主语

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