... example, the kind of clause (main, coordinate, subordinate), whether the clause has a verb to be solved, the voice and form of the clause, the kind of event described by the clause, the time interval ... understand the discussion of the Domain Expert, a sketchy account of the system mode of operation is given. - 125 - At the beginning of each session, the Tutor starts the interaction with the student ... capabilities. The final section deals with the relevance of the present proposal both in the framework of linguistic studies on verb generation and of intelligent tutoring systems for language teaching....