Il veut le faire. Il réussit à le faire. Il essaya de le faire.
Are there any general rules that dictate which (governing) verbs require a plain infinitive, which an infinitive with the preposition à and which an infinitive with the preposition de, or it is just a matter of familiarity and learning?
How do French children learn the different cases in school? Are they provided with a consolidated list or is teaching based on the use of mnemonics?