How can we call them PRESENT or PAST participles?

This is to modify your post, please.

Do not use two conjunctions to combine two clauses. One will do. You may choose either in the above case. Further, an article is missing.

Even though KILLED is a finite verb (the main verb), it is also a PAST PARTICIPLE.
OR
KILLED is a finite verb (the main verb), but it is also a PAST PARTICIPLE.

Hi, thanks Beev for your explication, concerning PICK UP and PICK.

But see:
-Does your mother pick you with her car, after school?.
Now is the above the same to usîng PICK UP without the object (car)? like the following:

-Does your mother pick you up
after school.

Are they the same?

Hi, THL
Thank you a lot for the corrections.

Please see below if I am correct at adentifying FINITE and NON-FINITE verbs:

-The books have been collected.
(finite=have been, non-finite=collected).

-The books have been being collected.
(finite=have been, non-finite=being collected).

Am I right in adentifying finite and non-finite verbs here?

Thanks Sir.

As I mentioned, the first one is incorrect. It has to be “Does your mother pick you up (with her car) after school?”

“with her car” is optional. If omitted then a car is likely to be assumed. Actually I think I would more likely say “in her car”. “car” is not the object of the verb. The object is “you”.

-The books have been collected.
(finite= have been collected > the main verb ‘‘collect’’ has been used in the present perfect tense and in the passive voice).

-The books have been being collected.
(This tense construction is absurd since it is not in use, though it is technically possible).

Am I right in identifying finite and non-finite verbs here? NO.

Now note (meticulously) the various tense constructions of the verb "collect’’ below:

ACTIVE VOICE
collect/collects (present simple)
is/am/are collecting (present progressive)
has/have collected (present perfect)
has/have been collecting (present perfect progressive)

collected (past simple)
was/were collecting (past progressive)
had collected (past perfect)
had been collecting (past perfect progressive)

will collect (future simple)
will be collecting (future progressive)
will have collected (future perfect)
will have been collecting (future perfect progressive)

PASSIVE VOICE
is/am/are collected (present simple)
is/am/are being collected (present progressive)
has/have been collected (present perfect)
has/have been being collected (present perfect progressive) > not used

was/were collected (past simple)
was/were being collected (past progressive)
had been collected (past perfect)
had been being collected (past perfect progressive) > not used

will be collected (future simple)
will be being collected (future progressive) > not used
will have been collected (future perfect)
will have been being collected (future perfect progressive) > not used

You can practise making these constructuions with verbs like WRITE, SPEAK, CUT, PUT etc and observe how they change (or not) in their en-forms.

Good Luck!

Thanks T.H. you are lovely.

But an inkling with me:

-The books have been collected.
Is"have+been+collected" a one word? and all should be considered FINITE?
Besides, I see HAVE as the main verb and not COLLECTED.

Please, could you succinctly explicate why COLLECTED is the main verb?.

Thanks.

He has collected the books. This its ‘active voice’

And HAS is the finite(main verb) and COLLECTED(subordinate verb) therefore non-finite.

Base on this how could COLLECTED be the main verb in both passive and active voices.

A verbal may have one or two or three or four components and all of them have to be treated together.

He writes poems.
He is writing poems.
He has been writing poems.
He will have been writing poems.

The main verb is WRITE, which appears in various tense constructions.

Based on this how could COLLECTED be the main verb in both passive and active voices.

You seem to be confused. By MAIN VERB I mean the verb that denotes an activity. In this case it is COLLECT.

Please wait for someone else on the forum to explain it better.

I would have explained it exactly as you did in #48, T H Lawrence!

Thank you very much, Bev.

Hi, THL.
It seems it’s my misunderstanding of finite verbs that pushed me to make that blunder of mine.
See, sometimes the main verb tend to be a finite verb and non-finite:
-He is driving the car.

I see IS as the finite verb, besides DRIVING as present participle hence NON-FINITE.
But in one of your earlier post you considered IS+DRIVING as finite.
If so how can one distinguish between finite and non-finite in this ballpark.

But to add you can throw more light on finite verb to enlighten me.

But see below what wikipedia says here:

-The dog will have been trained.

It says WILL is a finite verb while (have been trained) is non-finite.

Why TRAINED is not the main verb here. It seems the apportioned for both finite and non-finite is explicitly mixed up.
Or if I am wrong correct me.

Thanks. Sir.