je ne sais pas quoi faire

I don't know what to do

→ je
phrase Rare #30,770
I don't know what to do Used to express uncertainty about what action to take. It can also be followed by a phrase specifying what to do with something or what to do next.
FR: Je ne sais pas quoi faire sans ton aide.
EN: I don't know what to do without your help.

Devant cette situation, je ne sais pas quoi faire.

Faced with this situation, I don't know what to do.

Je ne sais pas quoi faire à partir de maintenant.

I don't know what to do from now on.

Je ne sais pas quoi faire de mon argent.

I don't know what to do with my money.

Je ne sais pas quoi faire, C'est urgent!

I don't know what to do. It's urgent!

— L'Expérience (2001)

Je ne sais pas quoi faire ensuite.

I don't know what to do next.

Et maintenant, je ne sais pas quoi faire.

And now I don't know what to do.

— Les Nouveaux Sauvages (2014)

Je ne sais pas quoi faire, maintenant.

I don’t know what to do now.

Je ne sais pas quoi faire maintenant.

I don't know what to do now.

J'aimerais vous aider, mais je ne sais pas quoi faire.

I'd like to help you, but I don't know what to do.

— Dans ses yeux (2009)

Je ne sais pas quoi faire de ce truc.

I don't know what to do with this thing.