Penser

When used alone, "penser" means to reflect, consider an idea, or have an opinion. This verb can be used to express a belief, judgment, or personal reflection.

• Je pense que tu as raison. (I think you are right.)
• Elle pense que tu l'aimes. (She thinks you love her.)

"Penser" can also express a plan or intention:

• Nous pensons acheter un appartement dans le centre-ville. (We are thinking of buying an apartment in the city center.)
• Je pense partir six mois à l'étranger dans le cadre d'un échange universitaire. (I am thinking of spending six months abroad as part of a university exchange.)

Penser à

"Penser à" is used to indicate that a person has something or someone in mind. It implies mental attention directed towards an object, a task to accomplish, or a person. The preposition "à" is crucial here, as it directs the thought towards a specific subject.

Examples:

• Je pense à toi souvent, je ne t'oublie pas. (I think of you often, I do not forget you.)
• Pense à fermer la porte. (Remember to close the door.)
• Tu as pensé à éteindre la gazinière ? (Did you remember to turn off the stove?)

Comparison and context of usage

The main difference lies in the object of thought:

• "Penser" is more general and relates to the act of thinking or having an opinion.
• "Penser à" indicates a specific direction of thought, often related to considering or remembering something or someone.