amount   volume   quantity  

a large volume of + 不可數名詞        大量的......

= a large amount of + 不可數名詞

= a large quantity of + + 不可數名詞

There's a large volume of traffic on the roads on weekends.

We need a large amount of time and money for the project.

A large number of young people enjoy computer games.

a wide selection of + 可數名詞

This area is famous for a wide selection of restaurants.

The number of +複名 + 單動

The large/small number  of +複名 + 複動 .