大学英文写作第二版课件陈 倩ISBN 9787566308733 PPTUNIT12.ppt

  Unit 12 Definition OBJECTIVES To raise the awareness of the concept and purpose of defining To enable the students to know the information provided by different types of definition To enable students to write different definitions according to their communication needs  CONTENTS Lead-in Introduction Awareness raising Definitions: Formal definition Semi-formal definition Non-formal definition Expanded definition Language focus Homework   Lead-in What do we have to do if we want to introduce a new invention or concept? Introduction What? The description and explanation about the name, function, feature etc. of an object, a name, a concept etc. Introduction When? When the meaning of a new and more specialized terms or objects in a writing may not be understood by readers; When there is a need to apply for a patent for a new discovery or an invention; Introduction How could you do if a foreigner asks you what baozi is? Awareness Raising Formal definition, Semi-formal definition, Non-formal definition Awareness Raising Do Task 1 and answer the questions. A definition generally tells what is what. Now do Task 2 Awareness Raising: Keys to Task 2 Acceptable definition: 3) Not acceptable: 1), 2) and 4) Definition 3) classified and specified, understood; Definitions 1), 2) and 4) are unclear, ambiguous, and not understood Definitions: A Formal Definition General and broad, three kinds of information E.g. Term Class Who Feature Which . . . is (a) . . . etc. . . . Definitions: A Formal Definition E.g. Term class feature A thermometer is an instrument which is used for measuring the temperature of a room or a person’s body. Definitions: A Formal Definition Two steps in writing: to classify to specify Definitions: A Formal