and连接的两个主语从句谓语动词用单数还是复数

Question

如题所述

Answer 1

and连接两个主语，谓语动词用复数。
但是两个名词若构成一个整体事物时，谓语则用单数。
例如：
The teacher and his son are picking apples now．
老师和他的儿子在摘苹果。
Fish and chips is very famous food．
鱼和薯条是一种出名的食品。

Answer 2

通常情况下，由and连接的两个主语从句，意思都是紧密相联的，当做一个整体，谓语动词用单数。如:What
caused
the
fire
and
what
was
the
loss
is
unknown.
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