Verbos com preposição fixa (insistir em)

The verb chooses the preposition

Some verbs never meet an infinitive without their own preposition in between:

verbprepositionexample
aconselharaAconselho-te a descansar.
proibirdeProibiu-o de fumar.
insistiremInsiste em pagar.
The doctor forbade him to smoke.
O médico proibiu-o de fumar.

The preposition belongs to the VERB, not to the meaning — memorise them as a unit: aconselhar a, proibir de, insistir em, the way you already do with gostar de and precisar de.

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