pensi

In a sentence

• M'agrada que pensi en mi.

  I like that he/she thinks of me.

  Here, 'pensi' is used as the third-person singular present subjunctive form of the verb 'pensar', influenced by the main sentence demanding the subjunctive mood.

• Quan jo pensi el que vull fer, t'ho diré.

  When I think about what I want to do, I will tell you.

  In this sentence, 'pensi' operates as the first-person singular present subjunctive form of 'pensar' due to the action's hypothetical or non-concrete future time frame.

• No crec que pensi així.

  I do not think that he/she thinks in that way.

  Here, 'pensi' is again the third-person singular present subjunctive of 'pensar', as the main clause ('No crec') triggers the subjunctive mood in the subordinate clause.