. Simple present  em afirmativo consta em acrescentar a S na terceira pessoa do singular.

Exemplo,verbo Write.

I write

you write

he rites

she writes

it writes

we write

you write

they write 

Para formar o interrogativo usamos  do e does 
do para ( i, we, you, they )
does para ( he, she, it   )

Afirmativo simple  present

You write many books about Brazil

Interrogativo

Do you write many  books about Brazil?

Negativo

You don't write many books about Brazil