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关于要不要加第3人称单数的问题1.Billandhismotheroften(does还是do?)2.Billwithhismotheroften(does还是do?)给个理由

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关于要不要加第3人称单数的问题
1.Bill and his mother often (does还是do?)
2.Bill with his mother often (does还是do?)
给个理由
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答案和解析
第一个是用do,因为主语是Bill and his mother ,有两个人,所以用复数
第二个用does,这是靠前原则,则主语是Bill
回答绝对专业哦!