watch
The French word 'regarder' refers to the action of observing something carefully or attentively. It is often used much like the English verb 'watch'. For instance, 'Je vais regarder un film' translates to 'I am going to watch a movie'.
I am going to watch a movie tonight.
This sentence is in the future tense. 'Je vais' means 'I am going to', 'regarder' means 'watch' and 'un film ce soir' means 'a movie tonight'.
You have to watch this television show.
This sentence is in the imperative form telling someone to do something. 'Tu dois' means 'You have to', 'regarder' means 'watch' and 'cette émission de télévision' means 'this television show'.
He loves to watch the sunset.
'Il aime' translates to 'He loves'. 'Regarder' is 'to watch'. 'Le coucher du soleil' is 'the sunset'. This phrase is stating someone's preference or fondness for an activity, which is watching sunsets in this instance.