The present perfect simple is have/has + past participle.
(past participle - present perfect) 1 was told to come back the next day.
The same is true for the past and the past participle.
This form has also been used as a past participle.
For another form of the same word, there's the past participle presumed.
The locution as a past participle is also a Presidential favorite.
When forms of be are used with the past participle, they express passive voice.
For the past participle alone, the gender and the number.
When forming a verb, however, you need passed, the past participle of pass.
There are two kinds of past active participle, used with different functions.