I have seen constructions like:
The number of electrons present inside the metal is large.
In the given case, the noun electrons is directly followed by the verb present.
It could also be written using as adjective phrase as:
The number of electrons which are present inside the metal is large.
In this case, now noun electrons and verb present are separated by an adjective phrase.
I saw them destroy you.
She helped him find a buyer.
In these cases, I believe the noun/pronoun and the verb cannot by separated by any phrase like in the first example. I feel these constructions are a bit odd because of lack of an auxiliary verb and also due to the consecutive use of two different verbs with of course one noun/pronoun in between them. Can these have alternatives like that for the first example? Which these types of constructions are called (as)?