Поставьте предложения в вопросительную и отрицательную форму
He is an operator
They are locomotive drivers
You are a mechanic

Is he an operator?He isn't an operator.Are they locomotive drivers?They aren't locomotive drivers.Are you a mechanic?They aren't a mechanic.

вопросительная форма: is he an operator, are they locomotive drivers, are you a mechanic отрицательно не знаю