When the same idea is talked about more than once, it's usually replaced with a pronoun the second time in both English and French.
We use it / that in English, and in French we use le or l'.
Tu veux venir à la piscine? - Oui, je le veux.Do you want to come to the swimming pool? - Yes, I want to / I'd like that.
Tu penses qu'il est bon pour elle ? - Non je ne le pense pas.Do you think he's good for her? - No, I don't think so.
Note that le and l' replace ideas introduced mostly by que, or starting by an infinitive.
ATTENTION: You always use the masculine singular form le or l', even if the idea contains a feminine noun, as it's the whole idea that is considered here.
Note also that while in English, the pronouns it or that are not always necessary (e.g. Yes, I want to.), they are always required in French.
Vous croyez que Pierre viendra au bal? - Oui, nous le croyons.Do you think that Pierre will come to the ball? - Yes, we believe so.
Pauline pense vraiment que c'est bien de faire des études? - Oui, Pauline le pense vraiment.Pauline really thinks that it's good to study? -Yes, Pauline really thinks so.
ATTENTION: When ideas are introduced by the preposition à, then you use the adverbial pronoun y!
See also Y can replace à + thing / object / location (adverbial pronoun)
Want to make sure your French sounds confident?
We’ll map your knowledge and give you free lessons to focus on your
gaps and mistakes. Start your Braimap today »