关于There be句型的问题

没有钢笔用There is no pen.There are no pens 。都正确吗？谢谢!
答:都是正确的.
理由:no=not any; any 可用于单数，也可用于复数．例如：
1.If you see any interesting book,please buy it for me.
2.I have 2 brothers,but not any sisters.

都是正确的.
理由:no=not any; any 可用于单数，也可用于复数．例如：
1.If you see any interesting book,please buy it for me.
2.I have 2 brothers,but not any sisters.

一般情况下，no是默认为单数的，所以一般都是there is no ...

我想应该都是正确的！

对

都对