... Los Angeles Scientific Centre Report 1987 - 2796, Los Angeles, CA. Fum, D., Giangrandi, P., and Tasso, C. (1988) The ET Project: Artificial intelligence in second language teaching .In: F. ... Choosing Tense in English. USC Research Report 84-143. University of Southern California. Schuster, E. and Finin, T. (1986) VP2: The role of user modeling in correcting errors in second language ... items) are given in infinitive form and have to be conjugated into an appropriate tense. Sometimes, in order to avoid ambiguities, additional information describing the correct interpretation...