This study was designed to test a new method of instruction for Japanese language students' re-acquisition of the Japanese relative clause structure. 10 Japanese language students who had already been exposed to the Japanese relative clause in their previous semester were asked to take a pretest that assessed their (a) knowledge of basic grammar concepts such as a "subject" and "predicate," (b) their ability to apply those basic grammar concepts to the Japanese language, and (c) their grasp of the rules applying to the formation of the Japanese relative clause. Students were then placed into a control group containing 6 students and an experimental group containing four students. The experimental group received additional lessons consisting of explicit instruction of basic grammar in both Japanese and English, as well as basic noun relativization rules in each language. The study found that the explicit instruction helped student comprehension of the relative clause structure, although some difficulties remain in identifying the relative clause and in constructing it on their own.