Have you ever ridden a camel?
We have never flown in a hot air balloon.
7. emphasis the number of repetitions of the action or the number of things that have derived from this (time of completion is unspecified)
(with so far, many times, since, for the last year, for hours, for a week, several times, etc.)
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I have written five letters this morning!
She has called you ten times today!
She has had four cups of coffee since she woke up.
I have written many letters since I moved to Canada.
We have had five tests so far this semester.
He has been in New York many times.
I have played tennis every Sunday morning for the last two years.
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8. we often use the Present Perfect after the superlatives
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This is one of the most beautiful country she has ever visited.
This is the most delicious food I have ever eaten.
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9. with the expressions "This is the first time...", "It's the first time...", etc.
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This is the first time I've ever visited your website and I think it is awesome.
It's the first time I've ever eaten Chinese food.
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10. sometimes to emphasize the completion of the act in the time clause (with time words such as when, until, after, before, as soon as)
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You can go out as soon as you have finished your homework.
I will go to bed after I have written my report.
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