The constrastive analysis presented here is Volume Three in the author's series "A Contrastive Analysis of English and Vietnamese." Other volumes already published are "English Grammar, A Combined Tagmemic and Transformational Approach" [AL 002 422] and -Vietnamese Grammar, A Combined Tagmemic and Transformational Approach." The volume covering phonology is currently in press. The grammatical contrastive analysis is handled in four different steps: (1) An English grammatical construction is presented with a tagmemic or transformational formula and a tagmemic ordering, if necessary. A reference to the analysis of the construction in the English grammar part is given, if present. (2) A corresponding Vietnamese grammatical construction is then presented for the constrastive analysis. (3) A statement is made of the problems which may exist and whether they are tagmemic, substitutional, or transformational. (4) Suggested drills, which can be substitutions, transformations or expansion, are presented with structural formula so the reader can see the pattern to be taught. The whole English grammar is thus contrasted with the Vietnamese grammar to find out all the grammatical, teaching and learning problems of English grammar for Vietnamese students. (FWB)