- After is a preposition: it can be followed by a noun or an -ing form
- We ate in a restaurant after the film
- After seeing the film, we ate in a restaurant
- After in not an adverb: we do not use it with the same meaning as afterwards, then or after that
- We went to the cinema and afterwards (then/ after that) we ate in a restaurant.
(NOT… and after we ate in a restaurant)