Question

Passa para a forma negativa e interrogativa : I study at night.
She works with her mother.
I go to the beach with you.
We meet at school.
Mary sits near me.
I write letters to my friends.
They study in the same class.
He sends flowers to his girlfriend.

Answer 1

I do not study at night.

She does not work with her mother.

I do not go to the beach with you.

We do not meet at school.

Mary (she) does not sit near me.

I do not write letters to my friends.

They do not study in the same class.

He does not send flowers to his girlfriend.

Lembrando sempre que o does not é usado para o He, She e It.

E o s no final do verbo some pelo fato de já ter o auxiliar does.

Espero ter ajudado.