a lot of people
a lot of可以用于可数和不可数.
much用于不可数,不行.
many people对,但不能加S
people [ 'pi:pl ] n.人；人类；民族；公民
vt.居住于；使住满人
[复数people或ples 过去式peopled 过去分词peopled 现在分词peopling ]
只有指不同的民族时,才能加S