Relacionar Columnas Present Perfect Simple Vs ContVersión en línea Present Perfect Tenses por Rogelio Gómez 1 I have just lost my keys 2 I haven't finished my homework yet 3 I have already finished reading the book you lent me 4 I have worked as a teacher for 10 years 5 I have never been to Europe 6 I have been working for this company for 5 yerars 7 It has been raining all this week 8 I have practiced Karate since I was in elementary A recurrent activity within a certain period of time An experience An incomplete activity we know how long an activity has lasted and we have some certainty it continues in the present An activity that started in the past and we know when it started An activity which happened not long ago but we don't know exactly when, how or where it happened An activity that started in the past and we know how long it has lasted An activity we know is finished although we don't know exactly when