Intended for students in regular and advanced composition classes, each of the four controlled composition exercises presented in this paper aims at teaching writing style through carefully constructed short passages that concentrate on an isolated problem in style such as parallel structure, relative clauses, pseudo-relative clauses, and subjunctive form. The paper outlines the exercise procedure, which requires that students copy the passage and introduce some systematic grammatical change into each of the numbered sentences, thereby making repeated decisions about writing style. Exercise topics presented include an assertion of the superiority of reading over television viewing, a discussion of Elizabethan translators, an exposition of genealogy as a popular hobby, and a hypothetical presentation of a rebellion in a marriage relationship. A discussion of each exercise is included. (MAI)