We use the Present Perfect Simple to talk about things that we have done in our life, in other words to talk about our life experience.  
(+) Positive: Subject + have/has + past participle 
Example:  I have been to China. 

(-) Negative: Subject + have/has + not + past participle 
Example:  I have not eaten Sushi.
(?) Question:  Have/Has + subjectpast participle ?
Example: Have you tried ice skating?