| INTRODUCTION | 第1-20页 |
| CHPTER I．DEFINITIONS OF THE PG FORM | 第20-23页 |
| 1．1． Definition Used in This Paper | 第20页 |
| 1．2． Various Definitions | 第20-21页 |
| 1．3． Attempt to Establish the Relations between Form and Meaning | 第21-23页 |
| CHAPTER II．ITS FUNCTION AS TENSE | 第23-29页 |
| 2．1． Continuous Tense | 第23页 |
| 2．2． Futurate Meanings | 第23-28页 |
| 2．3． PG as Tense Marker | 第28-29页 |
| CHAPTERI II．ITS FUNCTION AS ASPECT | 第29-47页 |
| 3．1． Discussion of the Notion Aspect | 第29-31页 |
| 3．2． PG with Dynamic Verbs | 第31-37页 |
| ·PG Aspect with Stative Verbs | 第37-47页 |
| CHAPTER IV．SIGNIFICANCE FOR ENGLISH LEARNERS | 第47-51页 |
| 4．1． Effect on Ora lEnglish | 第47-48页 |
| 4．2． Importance for Translation | 第48页 |
| 4．3． Role for an Effective Communication | 第48-51页 |
| CONCLUSION | 第51-54页 |
