amount是可数名词吗

这里应该不算是可数不可数的问题。
a large amount=large amounts

是可数名词

KK: []
DJ: []

n.[C][(+of)]
1. 总数;总额
What is the amount we owe them?
我们总共欠他们多少钱?
2. 数量
We need a small amount of fuel.
我们需要少量的燃料。
vi.[W][(+to)]
1. 合计,共计
The total cost of repairs amounted to US$100.
修理费用总计一百美元。
2. 相当於
Keeping what belongs to another amounts to stealing.
将他人之物占为己有等於偷窃。
3. 产生...结果
He'll never amount to anything.
他将来决不会有出息

large amounts of是一个词组.加s没有错

amount
a.mount
AHD:[…-mount“]
D.J.[*6maunt]
K.K.[*6ma&nt]
n.Abbr. amt.（名词）缩写 amt.
The total of two or more quantities; the aggregate.
合计，总额：两个或两个以上数量的总和；合计
A number; a sum.
数字；总数
A principal plus its interest, as in a loan.
本利之和：贷款的本金加利息
The full effect or meaning; import.
全部效果，全部含义；重要性
Quantity:
数量：
a great amount of intelligence.
非常聪明
v.intr.（不及物动