backnext The present perfect is formed from the present tense of the verb have and the past participle of a verb: The present perfect continuous is formed with have/has been and the -ing form of the verb: Use We use the present perfect tense: for something that started in the past and continues in the present: They’ve been married for nearly fifty years.She has lived in Liverpool all her life. Note: We normally use the present perfect continuous for this: She has been living in Liverpool all her life.It’s been raining for hours. for something we have done several times in the past and continue to do: I’ve played the guitar ever since I was a teenager.He has written three books and he is working on another one.I’ve been watching that programme every week. We often use a clause with since to show when something started in the past: They’ve been staying with us since last week.I have worked here since I left school.I’ve been watching that programme every week since it started. when we are talking about our experience up to the present: Note: We often use the adverb ever to talk about experience up to the present: My last birthday was the worst day I have ever had. Note: and we use never for the negative form: Have you ever met George?Yes, but I’ve never met his wife. for something that happened in the past but is important at the time of speaking: I can’t get in the house. I’ve lost my keys.Teresa isn’t at home. I think she has gone shopping.I’m tired out. I’ve been working all day. We use the present perfect of be when someone has gone to a place and returned: A: Where have you been?B: I’ve just been out to the supermarket. A: Have you ever been to San Francisco?B: No, but I’ve been to Los Angeles. But when someone has not returned we use have/has gone: A: Where is Maria? I haven’t seen her for weeks.B: She's gone to Paris for a week. She’ll be back tomorrow. We often use the present perfect with time adverbials which refer to the recent past: just; only just; recently; Scientists have recently discovered a new breed of monkey.We have just got back from our holidays. or adverbials which include the present: ever (in questions); so far; until now; up to now; yet (in questions and negatives) Have you ever seen a ghost?Where have you been up to now?Have you finished your homework yet?No, so far I’ve only done my history. WARNING: We do not use the present perfect with an adverbial which refers to past time which isfinished: I have seen that film yesterday.We have just bought a new car last week.When we were children we have been to California. But we can use it to refer to a time which is not yet finished: Have you seen Helen today?We have bought a new car this week.