what is the difference between "en" and "dans"? is "dans" used as a prepositional phrase like "dans mon sac a dos"?

2 answers

The word "en" is either an indefinite pronoun, an adverb or a preposition. As a preposition it means "in, into" such as "to go to France." = Aller en France. En mer = at sea. "en congé" = on leave. "en chemin de fer" = by rail. "en bois" = (made) of wood. The meaning can be very varied, dpending upon the context, or exactly how the word is used. (in, into, at, on, by, of, as)

The word "dans" is a preposition only, meaning "in; into; in (at the end of). Some expressions are "dans deux jours" = in two days...boire dans un verre = to drink out of a glass...dans la suite = later

There are quite a few idioms using "en" and here are some:
en automobile, avion, bateau, chemin de fer, voiture = by (inside the means of transportation) automobile, plane, boat, train, car

en arrière = backward(s), behind

en bas = downstairs
en haut = upstairs

en effet = (yes) indeed, as a matter of fact

en face de = opposite

en famille = as a family, within the privacy of the family

en même temps = at the same time

en plein air = in the open air, outdoors

en = late (not on time)

en tout cas = in any case, at any rate

en ville = downtown, in (to, into) town

Yes, "in/within" my backpack was a good example of using "dans."

Just take the expressions as you meet them.

Sra (aka Mme)
this is confusing. so sometimes when a phrase using "en" is translated into english, the "en" doesn't mean anything? do you know what year of french this is taught in?
merci beaucoup!! vous etes super!