Tu es sûr que c'est faux ?

Questions & Answers about Tu es sûr que c'est faux ?

In English, I could just say "Are you sure it is false?". Can I leave out que in French?
No, in French you must always include que to connect the two parts of the sentence. You can never drop it like we often drop "that" in English.
Why is there an accent mark on the 'u' in sûr?
The circumflex accent on sûr (sure) is there to distinguish it from the preposition sur (on). Without the accent, it would be a completely different word!
Why isn't que shortened to qu' here?
The word que only drops its 'e' and becomes qu' when the following word starts with a vowel or a silent 'h' (like qu'il or qu'elle). Because c'est starts with the consonant 'c', the que stays whole.
If I am talking about a feminine thing being false, does faux change to feminine?
Normally, yes, the feminine form is fausse. However, when you use the phrase c'est (it is) to describe a general situation or previously mentioned idea, the adjective that follows is locked in the default masculine singular form, so it stays c'est faux.

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