* "I'm thinking about [something]": "Je pense à [something]"
* "I'm thinking about [someone]": "Je pense à [someone]"
* "I'm thinking about [doing something]": "Je pense à [doing something]"
Examples:
* "I'm thinking about my vacation." "Je pense à mes vacances."
* "I'm thinking about you." "Je pense à toi."
* "I'm thinking about eating pizza." "Je pense à manger une pizza."
Note: "à" is used after "penser" when you are thinking about something or someone.
