PTP HomepageAuthor Profile Introduction Commonly Misused Words and Expressions I. On the contrary II. ``keep,'' ``maintain'' and ``preserve'' III. ``order" IV. Commonly confused expressions V. ``on the other hand" Verb Usage I. Some discussion of verb tense II. Verbs synonomous with ``do'' Style I. Abbreviations II. Mathematical Symbols as Collective Nouns Pronouns I. Discussion on problems with pronoun usage
