... general theory of action and time Artificial Intelligence, 23, 123154 Fum, D., Giangrandi, P and Tasso, C.: Tense Generation in an Intelligent Tutor for Foreign Language Teaching: Some issues in the ... ease at hand The computational application of the naive grammars, in other words, disclosed some deficiencies and incongruities that went unnoticed in the original formulation Second, the informal ... underlying the choice and conjugation of an English verb tense One of the main concerns in designing the knowledge base for this module has been that of maintaining the wealth of ideas and intuitions...