There are a couple of restaurants in Tokyo that I enjoy dining in. (Is 'of' necessary?)

There are a lot of people.

I only know of 'lot' and 'couple'. Does anyone have a list of commonly used non-collective nouns that describe the amount of something?
Hi,

There are a couple of restaurants in Tokyo that I enjoy dining in. (Is 'of' necessary?)

There are a lot of people.

Yes, you need 'of'.

Clive
Thanks.

If so,

a couple hours

is grammatically wrong?
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Hi,

Yes, although it is said by some people in casual and informal English.

Clive

If there were any activities.