aluminum0719

[edgy meadow]

Please be patient

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

Pro tip: you can rename the thread title with `.tr <thread name>`

Make it descriptive, including relevant context, but also to the point. This way you improve your chances of getting a more relevant and specific answer.

[quartz lodge]

falloir is ONLY ONLY FOR il faut, it is a 'it must be that' (il faut que je mange - it must be that I eat), or 'ONE MUST' (il faut faire leur devoirs - one must do their homework)

Devoir - I should. Je dois faire mes devoirs, je dois partir

Avoir desoin de - to HAVE THE NEEED TO. J'ai besoin d'aide (I have the need for your help; ie. i need your help!)

[fluid oar]

when is the best time to use them

like should i say il faut que je aller or should i say je dois y aller

[broken basalt]

There's a fair amount of overlap between them when translating to English. They can often be interchangeable to some degree. But, to summarize

Falloir ~= it is necessary
Devoir ~= must, can carry a sense of obligation
avoir besoin de ~= have a need of

[quartz lodge]

il faut que je vais - I HAVE TO ABSOLUTELY GO

je dois y aller - i SHOULD go

[broken basalt]

Eh, I wouldn't translate it that way.

il faut que j'y aille -> I need to go
je dois y aller -> I must go

But again, they can be interchangeable depending on context

[quartz lodge]

donc comment tu dis 'i should go'

[broken basalt]

je devrais partir, personally

[quartz lodge]

je dois partir ça marche aussi

[broken basalt]

but there's also some overlap between indicative and conditional for translating "should"