OG72

The gyrfalcon,an Arctic bird of prey,has survived a close brush with extinction;its number are now five times greater than when the use of DDT was sharply restricted in the ealy 1970's。

为什么原句是正确的，而不能用extinction;its number are now five times more than 。我记得OG说greater than修饰的是不可数名词啊。

不好意思，还是不明白。more than 和greater than的区别到底是什么啊？

我的意思是greater than是否可以修饰可数名词呢？