no 后面是单数还是复数 there were

例句：

There was no water in the glass.

There were no students in the classroom.

看主语是否可数，不可数Water，则用was

可数，students，用were

there is no后面接单数

例:

There is no money.没有钱了

不可数名词，单数。

There are no apples.

可数名字，复数。

当no作为限定词时，它后面可以接可数名词或不可数名词。

通常情况下，当no后面接可数名词时，该名词使用复数，特别是当涉及到"there are…"， "……has…"这样的句型时

比如：

(1) It was early December and there were no leaves on the trees.

(2) The room has no windows.

(3) No road accidents were reported in Chelsea throughout August.

但是在一些情况下，no后面的可数名词也可以使用单数，而是否使用单数的关键在于说话者认为这个名词属于单数还是复数

比如：

I have no wife.

这里wife虽然是可数名词，但是句子一般不能写成：I have no wives. 因为通常情况下一个人只有一个妻子。

又比如：

He must lead a lonely life in that village: he has no wife and no children.

这里用no children比用no child要更加自然