THIS LANGUAGE UNIT ON USAGE FOR 12TH-GRADE STUDENTS IS DIVIDED INTO SIX SECTIONS--"INTRODUCTION TO THE STUDENTS,""USAGE IN THE HIGH SCHOOL ENGLISH CLASS,""VARIATIONS WITHIN STANDARD AMERICAN ENGLISH,""BASES FOR JUDGMENTS ABOUT USAGE," AND "CHARACTERISTICS OF A MATURE ATTITUDE TOWARD USAGE." FOUR EXERCISES, SOME WITH MULTIPLE PARTS, DIRECT THE STUDENT (1) TO EXAMINE DIFFERENCES BETWEEN AMERICAN AND BRITISH ENGLISH, AMONG AMERICAN DIALECTS, AND AMONG USAGES ON VARYING SOCIAL LEVELS, (2) TO IDENTIFY THE USAGE LEVELS OF NUMEROUS EXPRESSIONS, (3) TO ANALYZE A SPECIFIC EXPRESSION, THE USAGE LEVEL OF WHICH IS NOT READILY APPARENT, AND (4) TO DEFINE "GOOD ENGLISH." 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)