there firemen are very helpful 变单数句

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therefiremenareveryhelpful变单数句therefiremenareveryhelpful变单数句therefiremenareveryhelpful变单数句Thisfirema

there firemen are very helpful 变单数句
there firemen are very helpful 变单数句

there firemen are very helpful 变单数句
This fireman is very helpful
或者The fireman is very helpful~

The fireman is very helpful.

this fireman is very helpful

Fireman is very helpful.
本句子为主系表结构,主要的就是men改为man(复数变为单数)《主语》,are改为is(复数变为单数)《系动词》