"Rent-a-Wreck" is countable or uncountable?

English as a Second Language English Vocabulary, Grammar and Idioms
1

Hi,

“Rent-a-Wreck” in “have you tried Rent-a-Wreck?” is countable or uncountable? If it’s countable noun, how to write it in plural?

Similarly, how to write “a human being” and “a carry-on” in plural?

Thanks
khanh

2

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Rent-a-Wreck is a company name, and is countable if, for instance you are speaking of branches: There are Rent-a-Wrecks in all the major cities.

a human being; two human beings

a carry-on; two carry-ons
.

3

Dear Sir,

thanks

Khanh