Using Do and Does - English Grammar

To make a question in English we normally use Do or Does. It is normally put at the beginning of the question (before the subject).

Affirmative: You speak Spanish.
Question: Do you speak Spanish?

You will see that we add DO at the beginning of the affirmative sentence to make it a question. We use Do when the subject is I, you, we or they.

Affirmative: He speaks Spanish.
Question: Does he speak Spanish?

When the subject is he, she or it, we add DOES at the beginning to make the affirmative sentence a question. Notice that the letter S at the end of the verb in the affirmative sentence (because it is in third person) disappears in the question. We will see the reason why below.
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