Question

coloquem essas frases em negativa
he is doctor
you are a good singer
she is a good girl
they are smarts
it is a dog​

Answer 1

Resposta:

he is not doctor

you are not a good singer

she is not a good girl

they are not smarts

it is not a doctor

Explicação

is not vira "isn't"

are not vira "aren't"

Answer 2

He is not a doctor/ He isn't a doctor

You are not a good singer/ You aren't a good singer

She is not a good girl/ She isn't a good girl

They are not smarts/ They aren't smarts

It is not a dog/ It isn't a dog

Obs: coloquei em cada um, uma resposta abreviada e outra não. A escolha fica a seu critério