We use interrogation to ask questions. And this interrogation method has three forms. They are:

1.Est-ce que/qu’

2.Intonation

3.Inversion

Est-ce que/qu’ :

It comes before the subject. It has a meaning of (do/does) , (can/could)

Ex: Est-ce que tu parles tamoul?
(do you speak tamil?)

Intonation:

It gives a rise and fall to the voice while speaking.

Ex: vous parlez anglais?
(You speak English?)

Inversion:

Inversion of subject and verb takes place in this method.

Ex: parle-t-it espagnol?
(does he speak Spanish?)