Question

a large amount of 和 large amounts of的区别

Answer 1

都是接不可数
a large amount of作主语的主谓一致
amount用作名词时，意为“数量”“金额”等，通常用于a (great, large) amount of 这类结构，其后通常接不可数名词。如：
There was a fair amount of traffic on the roads. 路上的车辆颇多。
An increasing amount of organic produce is to be found on supermarket shelves. 越来越多的有机产品出现在超市货架上。
这类结构用作主语，其谓语的数取决于amount 的数。如：
在这座桥上花了大量资金。
正：A large amount of money was spent on the bridge.
正：Large amounts of money were spent on the bridge.