This is a DVD lecture series by the late Yoshiaki Takahashi, a prominent English instructor at Sundai Preparatory School, focusing primarily on the fundamental grammatical structures of English. Because it's a DVD and not a CD, you can also watch the instructor's board writing, which adds to the experience. The highlight of this lecture series, I believe, is the detailed two-part lecture on relative clause chains, an important topic that often doesn't get enough attention. This DVD set thoroughly analyzes English sentence structure, consisting of 15 volumes. The textbook is not included as I would like to keep it, but I am offering the set at a reasonable price. - Set Contents: Perfect English I (15 Volumes) - Instructor: Yoshiaki Takahashi - Content: Thorough Analysis of English Sentence Structure - Format: DVD - Language: English - Series Name: Perfect English Thank you for looking.