enough后面可以加名词单数也可以加名词复数。

enough (用于复数或不可数名词前) 足够的，充足的，充分的。

There isn't nearly enough time to get there now.

现在根本没有足够的时间赶到那儿。

They had enough fuel to see the winter out.

他们有足够的燃料过冬。

Come and get me if you think you're hard enough.

你要是觉得自己有种，就冲着我来吧。