You use the perfect tense when, in English, you would say that something has happened. So, if you wanted to say: ‘You have been to the hairdresser,' 'she has eaten all the biscuits’ or anything else ...
In English, the past perfect tense describes an action completed before another past event, or an action completed before a specific time focus. Grammatically, as the present perfect does, the past ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback