Question

He must earn money отрицательная прошедшая будущая вопросительная форма предложения

Answer 1

He must not earn money
He did must earn money
He will must earn money
Must he earn money?

Answer 2

He mustn't earn money.
Must he earn money?
He had to earn money.
He will have to earn money.
модальный глагол must не имеет
прош.и будущего времён.у него
для этого есть эквиваленты