Project 2 of the GUME research project on foreign language teaching methods considers whether the structures "some" and "any," and their combinations in English, are best taught by adherence to the habit-formation (implicit) theory or by adherence to the cognitive-code learning (explicit) theory. The experiment also investigates the effectiveness of using explicit English or explicit Swedish for the explanations. Details on project design, selection of the 13- and 14-year-old subjects, teaching material, and evaluation are presented here, and the results of the statistical analysis are discussed. The superiority of one teaching method over another is not proven. There are no statistical differences between the teaching strategies as they are defined. The lack of significant results seems to indicate a procedure akin to one suggested by W. Rivers, where she advocates that the student should be made aware of the crucial element in the new pattern. A bibliography is included, and appendixes provide detailed information on the grammar lessons and tests. Related documents can be found through the following reference numbers: Project 1, ED 034 172; Project 3, FL 002 819; Project 4, ED 045 969; Project 5, FL 002 814; Adult Project, FL 002 868; statistical synopsis of Projects 1-3, FL 002 816. (Author/VM)