Howmany后面加可数名词。how many的意思是多少。how many的例句：We've tried this method for no one knows how many times（这种方法我们已不知试了多少次）。

how many的例句：Nobody knows precisely how many people are still living in the camp（没有人确切知道还有多少人仍住在露营地）；How many years is it since we've seen each other？Too many，anyway（我们多少年没有见面了？反正有年头了）。