Papers that address implications of linguistic theory for applied linguistics are presented. In "Some Semantic Properties of Some Conjunctions," W. Abraham is concerned with the function of "but" and its translation equivalents in German and other languages. In "Is It Possible and Necessary to Write Text Grammars?," T. P. Krzeszowski examines the theoretical status of text-grammars and the use of sentence connectives. In "Esquisse d'une theorie de 'Do'" (Outline of a Theory of 'Do'), H. Adamczewski examines the anaphoric function of the verb "do" in English texts, and its use as a marker of modality or some other semantic qualification. In "Notes sur l'expression verbale de l'assentiment et de la confirmation en anglais" (Notes on the Verbal Expression of Assent and Confirmation in English), C. Heddesheimer considers research conducted on the speech acts of assent and confirmation. In "Some Metalinguistic Problems in Communicative Language Learning," C. N. Candlin considers research conducted on the rhetorical properties of discourse between doctor and patient. In "Interpretive Procedures and the Importance of Poetry," H. G. Widdowson examines the problem of teaching discourse, concentrating on the problems of interpretation. In "Interpretive Procedures: Seeing, Reading, and Understanding Discourse," S. P. Corder compares the interpretation of discourse with visual perception and the interpretation of pictures. In "Error Analysis and Pedagogical Ordering," A. Valdman describes the use of the results of a systematic error analysis to devise a language teaching syllabus. In "De la necessite de fonder l'enseignement de langues secondes sur l'etude de la langue maternelle" (On the Necessity of Basing Instruction of Second Languages on the Study of the Mother Tongue), E. Roulet considers metalinguistic knowledge development in the learner. (SW)