5.2.7 Perfect Infinitive

• The perfect infinitive translates as 'to have done something'
• The perfect infinitive is formed by using the infinitive of 'avoir' or 'être' followed by a past participle
• Je regrette d’avoir oublié vos chaussures


  I regret having forgotten your shoes
• Après avoir déjeuné, je suis allé à Londres


  After having eaten lunch, I went to London
• Je suis triste d’avoir perdu mon portable

  I am sad to have lost my phone
• Ne le jetez pas avant d’avoir fini

  Please don’t throw it away until you have finished
• Je regrette d’être parti tôt hier

  I regret having left early yesterday
• Verbs that use 'avoir' or 'être' in the perfect tense use the same in the perfect infinitive