We use the present perfect to express that an action started in the past and has lasted until now, or was only just completed. The present perfect simple is generally used to emphasise the completion of an action and its results. With the present perfect continuous, we emphasise the length or the uninterrupted progress of an action.
Present Perfect Simple |
Present Perfect Progressive |
---|---|
Result (what, how many/much, how often) Example: He has worked very hard. I have written a letter . |
Duration (how long, since when)
|
Negative: not since the last occurrence
|
Negative: not since the beginning of the action
|
Present Perfect Simple |
Present Perfect Progressive |
---|---|
|
|
We use the present perfect to express that an action started in the past and has lasted until now, or was only just completed. The present perfect simple is generally used to emphasise the completion of an action and its results. With the present perfect continuous, we emphasise the length or the uninterrupted progress of an action.
Present Perfect Simple |
Present Perfect Progressive |
---|---|
Result (what, how many/much, how often) Example: He has worked very hard. I have written a letter . |
Duration (how long, since when)
|
Negative: not since the last occurrence
|
Negative: not since the beginning of the action
|
Present Perfect Simple |
Present Perfect Progressive |
---|---|
|
|