Describes how, through the use of two diagrams, one can teach the English present-perfect to Iranian students. One diagram consists of a time-line divided into "past" and "non-past." The other uses an oval to indicate a time-span including the present. Both facilitate comprehension of present-perfect meaning. (PJM)

Present a study in which Arab subjects were to change 10 English declarative sentences into yes/no questions. Results showed 25.6 percent of the answers were erroneous. An attempt is made to account for the source of error. Most errors were not due to effects of the native language, but to the verb form used. (PJM)

A language instruction technique that uses students' foreign language errors to point up contrasts and similarities in the native and foreign languages is described as it was used with Albanian students learning French. (MSE)

Presents a framework for dealing with errors in natural language sentences within the context of automated second-language teaching. Using a feature grammar, it is possible to describe various types of errors in a uniform framework, clearly define an error, and analyze the error source. (24 references) (Author/CK)