content_image/705689.jpg content_image/705690.jpg content_image/705692.jpg
<img src='content_image/705689.jpg'>

<img src='content_image/705690.jpg'>

6 As can be seen, when the present perfect is formed with avere  the past participle does not change; but when the present perfect is formed with essere the past participle behaves like an adjective, agreeing in gender and number with the subject of the verb. Here are some examples: 

<img src='content_image/705692.jpg'>

* When the polite form is used and the auxiliary is essere , the past participle agrees with the gender of the person being spoken to, not with Lei . 

