EN
Different scholars advance arguments in favour of the tendency in Indo-European languages to shift from impersonal to personal constructions. The article presents some problems which seem to contest this tendency such as “Why, in the analytic languages, more developed or more distant from Proto-Indo-European than the synthetic ones, the impersonal 1) can be formed on almost all intransitive verbs (e.g. in French) and 2) can be used in environments which do not allow its use in the synthetic languages.” The analysis is based on a corpus, relatively big and representative, of texts in languages 1) synthetic, more close to, and 2) analytic, more distant from Proto-Indo-European. Such an approach, which completes traditional methods, is able to lead to establishing evolutive tendencies.