geaimoqueur12

[tall briar]

Please be patient

Our volunteers look into many questions every day; sometimes it takes them a little while to answer.

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[elder widget]

Of course, what is your question ?

[calm acorn]

Quelqu'un s'est-il déjà endormi en étudiant ?

What is s'est-il supposed to be

[bleak cargo]

Because this sentence is a question, the verb and the subject pronoun can be inverted. So instead of saying “Quelqu’un s’est déjà endormi en étudiant”, which would mean “Someone has already fallen asleep while studying”, using that inversion simply turns it into a question, i.e. “Has someone already fallen asleep while studying?”

Notice that since the subject, quelqu’un, is not a subject pronoun, (which are je, tu, il, elle, on, etc.), we have to add in the ‘il’ to make the inversion

So that’s why both quelqu’un and il are both there