PRESENT PERFECT SIMPLE TENSE – MEANING, USE & FORMS 1. MEANING AND USE · Unfinished Actions - Acciones que no se han finalizado. We use this tense when we want to talk about unfinished actions or states or habits that started in the past and continue to the present. Usually, we use it to say 'how long' and we need 'since' or 'for'. We often use stative verbs. ( Usamos este tiempo verbal cuando nos referimos a acciones que han comenzado en un pasado pero aún continúan en el presente. Palabras como "How long" , since o for aparecen en este tiempo) I've known Karen since 1994. She's lived in London for three years. I've worked here for six months. SINCE AND FOR - Desde y por A . We use ' since' with a fixed time in the past (2004, April 23rd, last year) . The fixed time can be another action, which is in the past simple (since I was at school since I arrived). U...
