Just the forms of present perfect. Let's go. In present perfect, it's have or has + verb 3.
I/you/we/they, have+verb 3; he/she/it, has+verb 3. What's a verb 3?
It's the third form of any verb. For example, with the verb "eat", that's for one; "ate", verb tweo; "eaten", verb 3.
So, we use that one with "have" or "has", depending on the pronoun. For example, "I have", or "I've drunk five pints of tequila" or if "he/she/it", "she has" or the contraction "she's become a zombie".
Those are all positive but the negative "not" goes with the verb "have". You can say "I have not," better contracted to "I haven't," "I haven't been to Brazil", for example, "yet".
For questions: have, I/you/we/they with a verb 3; has, he/she/it, with a verb 3. For example, "Have you eaten?"
"Has he/she/it, ever been to Brazil?" Is it necessary to say "ever"?
No, it's not necessary and "ever" basically means "in your life". So, if you're not asking for a life experience, don't use it.
Very important to remember: "I haven't+ever", good; "I have+never", fine; "I haven't+never", no, that's a double negative, don't use that form. Happy with the forms, let's continue to the next lesson.