a lot of可以等同于lots of或者many,意思是很多。修饰可数名词复数或不可数名词。例句:There are a lot of books in the library.意思相同的词(组)还有:many修饰可数名词much修饰不可数名词a great number of修饰可数名词a great amount of修饰不可数名词a great deal of修饰不可数名词plenty of修饰可数名词