Learn French: Nous ne dansons pas, nous regardons un film. - We are not dancing, we are watching a movie.

In French, the present tense covers both simple actions ("we watch") and ongoing actions ("we are watching"). You don't need a separate word for "are" to show that it's happening right now! So, nous regardons means both "we watch" and "we are watching", and nous ne dansons pas means both "we do not dance" and "we are not dancing".

Why do dansons and regardons both end in -ons?

They are both regular -er verbs (danser means "to dance", regarder means "to watch"). When talking about "us" or "we" (nous), you drop the -er at the end of the dictionary form and add -ons.

How do the negative words ne and pas work here?

In French, negation acts like a "sandwich" around the main verb. The ne goes right before the verb (dansons) and the pas goes right after it, making ne dansons pas.

Do I need an extra word for "at" if I want to say "looking at a movie"?

No, the verb regarder means "to look at" or "to watch" all by itself. You just put the thing you are watching (un film) directly after the verb without adding an extra preposition like "at".