a lot of既可以修饰可数名词，也可以修饰不可数名词，表示很多。many修饰的是可数名词，much是不可数名词，这两个词是有区别的，而a lot of两者都可以修饰。
There was a lot of background noise.
背景噪音很多。
We\'ve got a lot of hard work ahead.
我们往后还有很多艰苦工作要做。
There has been a lot of resistance to this new law.
这项新的.法规已经遇到很多的抵制。
