I've got three questions about clause elements:

1. Can there be an object with an intransitive verb?

For example: I am waiting for it.

Is “it” an object? If not, what type of clause elements is “it”?

2. What complements or objects can a clause have if the predicate is an intransitive verb?

3. What is the difference between adverbial and adverbial complement?

For example, what are the clause elements it these sentences:

Who's that hardly pounding on the door?

We loudly talked with him about the weather.

I am only waiting for this moment to be free.

Ah, and some more questions:

3. Are complements a part of a predicate?

4. Is object always a complement?

5. Do modifier and adverbial mean for the same thing?

6. Can adverbial or modifier be a part of a predicate? If yes, in what (which?) cases?

Thank you very much!

P.S. If it is not (a?) very tiring work, I would be very glad to see if I made any mistakes (errors?) in my letter Emotion: surprise)

Thanks in advance!
Intransitve Verb doesn't take object.

" for it " is a prepositional phrase.

The adverbial is adverb phrase, prepositional phrase, or a clause.

for example,

Next week, he will go to the park.

When I see her, I will ask her to go out with me.

Tom ran into the word.

Adverb complement occurs only in sentence with copular verbs such as feel, look, smell, sound, taste, become, be, put.

Tom is in the park. The adverbial complement " in the park " refers to the subject Tom.

Tom puts the cookies in the pantry. The advebial complement " in the pantry " refers to direct object " cookies "
Thank you very much for your answer.

So, if I understood you right, the "for it" phrase is an adverbial in my case?