Final answer:
Depuis is used for actions begun in the past that are still ongoing in the present.
Step-by-step explanation:
True. Depuis is used for expressions that describe actions begun in the past and that are still ongoing in the present. It indicates a duration of time that has been going on up to the present. For example, 'Je suis ici depuis une heure' means 'I have been here for an hour'.
Learn more about Depuis usage in French