How are past participles used in perfect tenses?

[Srivaaishnavi Srigrishna]

I’ve been a bit confused about how past participles are used in perfect tenses. Can you explain how they work with “have,” “has,” and “had,” and maybe give a few clear examples?

 

[emsr2d2]

You need to give us some example sentences in which you're confused as to how they work. We don't like to just spoonfeed answers to learners.

 

[Srivaaishnavi Srigrishna]

I understand—it probably helps to work with examples. Could you explain using something like:
“I have eaten,” “I had eaten,” and “I have been eating”?
I’m mainly confused about why the past participle is used after “have/has/had” and what it adds to the meaning.

 

[5jj]

Those are examples of perfect forms, not sentences in which you're confused how they work.

I’m mainly confused about why the past participle is used after “have/has/had” and what it adds to the meaning.

The past participle is part of every perfect construction. The sentence has no meaning without it.

 

[emsr2d2]

“I have eaten,” “I had eaten,” and “I have been eating”?

I’m mainly confused about why the past participle is used after “have/has/had” and what it adds to the meaning.

I don't understand. If a past participle isn't used after those words, you're left with ...

I have.
I had.
I have been.

How on earth would the listener/reader know you were talking about eating if you didn't put the relevant verb after have/had/have been?

If you're asking why a past participle form is used instead of another verb form, please tell us what verb form you would want to put there.