•			L'auxiliaire can signifie "pouvoir".

		A l'infinitif, on emploie to be able to.

		Exemple :
		It's great to be able to speak many languages.

•			Le futur de l'auxiliaire can est will be able to.

		Exemple :	
		Don't worry. I'll (will) be able to pick you up.

•			Le prétérit de l'auxiliaire can est could.

		Exemple :
		He could be very kind sometimes.
		I couldn't hear anything because of the music.