5 common adverbial positions

These words are Adverbial by position

If we want to make sure that this word is adverbial :
1. Substitute
If we can replace it with it it's not Adverbial .
He eats fast
Fast , it modifiers the verb ( eats ) , we cannot replace fast with ( it ) so fast here Adverbial

He eats sweet
Word ( sweet) we can replace it with( it)
He eats it
So it's Nominal
2. Passive : we can't make an adverb in passive form.
She plays skillfully
So ,skillfully an adverb because we cannot make it passive
3. Mobility: it has an ability to move within a sentence.
Tomorrow she will read a book
She will read a book tomorrow
3.elimenation : if the term in question is not a nominal,verbal, adjectival, and not a structure word , so it's adverbial

The cases that we can test the term whether it's Adverbial or not ☝️🏻

Retained object(RO) :
It comes only with a passive form and at the end of the passive form:

The students have been assigned a tough job

Form : Noun phrase
Function : Retained object
Position : Nominal

Hamlet was given a chance :
Form : Noun
Function : Retained object
Position : Nominal

Now,pathos, upstairs, Below,above,here,chaos ,
inside,inmost,back,alone,
today, abroad,ajar

The above words are identified as uninflected words ☝️🏻

The above words
Form : uninflected word
Function: modifier
Position : adj-al

هذني من ناحية Form كلهن نعتبرهن
Uninflicted words (UW)

An evening part
Form : Noun
Function : modifier
Position : adjectivally

A scenic drive
Form : adjective
Function : modifier
Position : adjectival

Below was dangerous
Form : uninflected word
Function : subject
Position : nominal

We found something to eat
Form : infinitive
Function : modifier
Position : adjectival

Students usually eat walking
Form : verb
Function : modifier
Position : Adverbial

They came in wrestling
Form : verb
Function : modifier
Position : Adverbial

The deer was standing below
Form : uninflected word
Function : modifier
Position : Adverbial

The written book is better
Form : verb
Function : modifier
Position : adjectival

The student was given a car
Form : Noun
Function : Retained object
Position : Nominal

Quickly is better
Form : adverb
Function : subject
Position : Nominal

I thought him a liar
Form : Noun
Function : objective complement
Position : Nominal

They planned to err
Form : infinitive
Function : Direct object
Position : Nominal