AN EXPLANATION OF THE THEORY OF DEEP STRUCTURE AS IT SERVES TO DESCRIBE THE ENGLISH LANGUAGE SIMPLY, CONSISTENTLY, AND COMPLETELY CONSTITUTES THIS LANGUAGE UNIT FOR 11TH-GRADERS. PRESUPPOSING THE STUDENT'S KNOWLEDGE OF PHRASE STRUCTURE AND TRANSFORMATION RULES, THE CONCEPT OF DEEP STRUCTURE IS ILLUSTRATED IN THE IMPERATIVE AND PASSIVE SENTENCE FORMS, AND EXERCISES ARE PROVIDED FOR STUDENT PRACTICE IN NOTING THE DERIVATIONS OF AND THE RELATIONSHIPS AMONG SUCH SENTENCES. BRIEF SECTIONS DEAL WITH NOMINALIZATIONS, AMBIGUITIES, AND DELETIONS IN THE THEORY OF DEEP STRUCTURE. SEE ALSO ED 010 129 THROUGH ED 010 160, ED 010 803 THROUGH ED 010 832, TE 000 195 THROUGH TE 000 220, AND TE 000 227 THROUGH TE 000 249. (RD)