ENGR 220 Lecture 10: The Present Perfect Continuous Tense - English
Document Summary
This tense formed by the present of the verb to be + the present participle . Affirmative : i have been working , he been working etc . Negative : i have not / haven"t been working etc . Interrogative : have i been working ? etc . This tense is used for an action which began in the past and is still continuing . or has only just finished : I"ve been waiting for an hour and he still has not turned up . Comparison of the present perfect simple and continuous . He has been sleeping for six hours . A repeated action in the simple present perfect can sometimes be expressed as a continuous action by the present perfect continuous : I have written six letters since breakfast .
