Question

Change to interrogative form:
a)you know Mary.
b)They wrote to their parents last month.
c)Peter dances rok music.
d)It sleeps in its small house.
e)We start our classes at 7 o' clock.

Answer 1

a) Verbo no presente simples, usamos o auxiliar DO.
    Do you know Mary?

b) Verbo no passado simples, usamos DID. O verbo volta para o presente.
    Did they write to their parents last month?

c) Sujeito na terceira pessoa do singular (he) e frase no presente simples, usamos o auxiliar DOES.
    Does Peter dance rock music?

d) Mesmo caso do item anterior.
    Does it sleep in its small house?

e) O auxiliar aqui é DO.
    Do we start our classes at 7 o'clock?