and后什么时候用is,什么时候用are李南and临临（）myfriends.这个用什么?哪种情况下用are?给个比较详细的解释!谢谢大哥哥姐姐们!

Question

and 后什么时候用is ,什么时候用are
李南and 临临（）my friends.这个用什么?
哪种情况下 用are?给个比较详细的解释!谢谢大哥哥姐姐们!

Answer 1

) 由and连接两个名词或者代词作主语时
A and B分为以下四种情况：
i.A、B表示不同的人、物或者观念的时候,谓语动词要用复数形式
Li Ming and Zhang Hua are good students.
Both the parents and the children are here.
ii.A、B表示同一个人、物或者观念的时候,谓语动词要用单数形式
A journalist and author lives in the sixth flat.
The turner and fitter is under twenty-five.
iii.And连接几个单数主语,主语由each、 every、 no、 many等词修饰的时候,谓
语动词要用单数
Each boy and each girl is invited.
Every boy and girl is invited.
No boy and no girl is there now.
iv.A、B为两个不可分的东西时,谓语动词用单数
A law and rule about protecting environment has been drawn up.
Bread and butter is nutritious.