Present Perfect Simple or Continuous: what has been done and what someone has been doing

In Simple, V3 comes after have/has: written, sent, checked. In Continuous, add been after have/has and use a verb with -ing. Do not replace V3 with V2 or leave out been.

In a question, have/has comes before the subject; in a negative sentence, not comes after have/has. I've = I have; before been or V3, she's can mean she has. Contractions are natural in conversation; full forms are also correct. Here, the form is needed to convey the viewpoint, not as a separate table to memorize.

For a summary of completed units or occasions, Simple is natural: how many pages have been edited, how many calls have been made. For the time spent on an activity, we often choose Continuous. What matters is not the number itself, but what the number counts.

A number does not rule out Continuous. I've been reading three books describes working on three books, for example reading them by turns; the sentence itself does not say that all three have been read to the end. If you need a summary of what has been read, express it through Simple. Similarly, a repeated activity does not have to be continuous: there may be breaks between calls or study sessions.

A person may already be sitting and resting but say, I've been running. The running does not have to be happening at the moment of speaking: it happened recently, and its traces are visible now. Continuous often answers the question, “Why are you wet, tired, or covered in paint?”

Therefore, “a result now” is not an exclusive feature of Simple. Simple can name an achievement, while Continuous can describe the activity that explains the present state. Continuous by itself neither confirms nor denies that the whole task has been completed; context is needed.

With live and work, both forms often describe a situation from the past up to the present. I've worked here for six years does not automatically mean “I have already left the job.” Continuous directs more attention to the progress of the activity, but the form itself does not set a date for when it will end.

For, since, and how long work with both forms. Do not choose Continuous only because you see a duration. Without context, both options may be appropriate. Exercises with one expected answer should clearly narrow the focus; in your own answer, you can explain the viewpoint you chose.

Know, in its usual meaning of knowing a person or fact, describes a state, so for a period continuing up to now we use have/has known. Have in the sense of possession also normally takes Simple: have had a bike. Duration does not turn knowing or possessing into an activity.

But have a meeting, have lunch, and have a break name an activity or event. Therefore, have been having meetings is a normal construction. Look at the meaning of the whole expression instead of placing a permanent ban next to the word have.

With feel when describing how you feel, both forms are possible: I've felt tired lately and I've been feeling tired lately. Continuous naturally shows a state over a recent period. This is not a reason to extend the same freedom to ordinary know.

Continuous can emphasize a new or temporary routine that has been repeated recently: using a different route, using a different library, or practising a skill in the evenings. This does not mean that the activity is happening every second.

Before asking a question, decide which information gap you are filling: completion, quantity, or duration. Have you finished? and How long have you been working? are not interchangeable, even when they concern the same task. With a state, Simple is needed: How long have you known…?

Try three steps: name what is important now; decide whether you are reporting a total, an activity, or a state; build the form. If both perspectives are possible, choose the one that will help the other person, or combine them.

In an open-ended exercise, the example is just one way to answer. Check the content, form, and fulfillment of any visible condition; synonyms and natural contractions are allowed. A correct sentence with a different perspective may not fulfill a narrow learning goal, but it does not become grammatically incorrect because of that.

Return later with a different situation without looking at the example. Choosing a completed sentence confirms understanding, while your own reply demonstrates a different skill. Here, you check open-ended answers yourself based on criteria: this is not an automatic language assessment or a certification of your entire B1 level. You can always invent facts.