a large amount of + 不可數名詞 大量的....
= a large volume of + 不可數名詞
= a large quantity of + 不可數名詞
例: We need a large amount of time and money for the project.
例:There's a large volume of traffic on the roads on weekends.
另:
a large number of + 複數名詞 許多.....
例:A large number of young people enjoy computer games.