5.46 used with the present perfect

When you use the present perfect to mention something that is still relevant to the present, you can add an adjunct of frequency to indicate that the action was repeated.

The use of the present perfect to talk about situations which are still relevant is explained in paragraph 5.33.

5.47

Note that if you are talking about a quality, attitude, or possession that still exists or is still relevant, you need to use the present perfect with an adjunct of duration.

5.48

If you use the present perfect and the present perfect continuous to mention a continuing activity that began in the past, you can add an adjunct of duration to indicate how long it has been going on.

The use of the present perfect and the present perfect continuous to talk about activities that began in the past is explained in paragraph 5.35.