Нужно перевести предложения в отрицательную и вопросительную форму.

John speaks english

Peter came to class ten minutes late

We use many books during our lesson

She gave me a book

I understood everything he said

They speak clearly

She wants to learn english

Mary will come to class tomorrow

Mr. Smith is out of town

John has left for London

И если не сложно объяснить почему так меняется предложение

John does not speak english. Does John speak english?

Peter did not came to class ten minutes late. Did Peter came to class ten minutes late?

We do not use many books during our lesson. Do we use many books during our lesson?

She did not gave me a book. Did she gave me a book?

I do not understood everything he said. Do I understood everything he said?

They do not speak clearly. Do They speak clearly?

She does not want to learn english. Does She want to learn english?

Чтобы сделать отрицательную форму I, We, They, You надо добавить do not (если настоящее) did not (поршлое)

He She It does not did not

Чтобы написать вопросительную форму нужно ставить частицы (Do/Does/Did) в начало.

John doesn't speak English. Peter doesn't came-to class ten minutes later. We don't using many books during our lessons. She doesn't gave me a book I don't understand everything he said. They don't speak clearly. She doesn't wants to learn English. Mary doesn't will come to class tomorrow. Mr. Smith doesn't is out of town. John doesn't has left for London. Все просто I, we, you, they-don't She, he, it-doesn't