Il faut que vs. devoir

KateB2Kwiziq community member

Il faut que vs. devoir

Bonjour.  I'm trying to get a feel for when to use/not use the subjunctive mood.  One sentence on my quiz was:  "Il faut qu'ils aient fini leur devoirs avant le diner" (sorry - my accents aren't working).  This translates to "They need to have finished their homework before dinner."

Would it be an alternative to say:  Ils ont du [accent] leur devoirs avant le diner [accent]" (which I believe translates to  "They must have finished their homework before dinner.")

Can you please explain how these are different?

Asked 1 year ago
CélineKwiziq team memberCorrect answer

Bonjour Kate,

What a great question! ;-)

These two statements aren't equivalent:

Il faut qu'ils aient fini leur devoirs avant le dîner

 -> using "il faut que + [Subjonctif]" (in Le Présent) means that there's an absolute need/condition to fill in before they can dinner

Ils ont dû finir leur devoirs avant le dîner 

-> using "avoir dû + [faire quelque chose]" gives a slight feeling of uncertainty 

I hope this is helpful.

Bonne journée !

Il faut que vs. devoir

Bonjour.  I'm trying to get a feel for when to use/not use the subjunctive mood.  One sentence on my quiz was:  "Il faut qu'ils aient fini leur devoirs avant le diner" (sorry - my accents aren't working).  This translates to "They need to have finished their homework before dinner."

Would it be an alternative to say:  Ils ont du [accent] leur devoirs avant le diner [accent]" (which I believe translates to  "They must have finished their homework before dinner.")

Can you please explain how these are different?

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