Breakdown of Ce dont tu as besoin pour gagner, c'est de sacrifier le cavalier.
tu
you (informal singular)
pour
for
gagner
to earn / to win
c'est
it is, that is
avoir besoin de
to need
ce dont
what / that which (of which)
de
to (introducing an infinitive after a verb)
sacrifier
to sacrifice
le cavalier
the knight (chess)
Questions & Answers about Ce dont tu as besoin pour gagner, c'est de sacrifier le cavalier.
Why do we use ce dont here instead of ce que?
We use ce dont (what / the thing that) because the underlying verb phrase is avoir besoin de (to need). The relative pronoun dont replaces objects introduced by the preposition de. If the verb didn't take de, you would use ce que (e.g., Ce que tu veux - What you want).
Why is there a de before sacrifier in c'est de sacrifier?
When you use an emphatic structure like Ce dont... c'est... followed by an infinitive, you usually include de. It essentially "echoes" the de from the first part of the sentence (avoir besoin de). The full pattern is Ce dont [subject] + [verb + de], c'est de + [infinitive].
Why do we need c'est in the middle of the sentence? Couldn't we just say "Ce dont tu as besoin... est de sacrifier"?
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