Learn French: Tu bois le lait ? - Are you drinking the milk?

In spoken French, you can turn a regular statement into a yes/no question just by raising the pitch of your voice at the end. It's exactly like saying "You're drinking the milk?" in casual English. This rising intonation is the most common way to ask everyday questions in French!

Why does the translation say "Are you drinking" instead of "Do you drink"?

French only has one present tense, so tu bois covers both "you drink" (a general habit) and "you are drinking" (happening right now). You just rely on the context to know which one it means.

I learned to say "du lait" for milk. Why is it le lait here?

You use du when you mean "some" milk in general. By using le (the), the speaker is asking about a specific milk—maybe the last bottle in the fridge, or the milk they just set on the table.

Do I pronounce the s at the end of bois?

No, the final s in bois is completely silent. It is pronounced exactly the same as boit (he/she drinks).