[Grammar] have/has/having/having been/has/has been/had/had been

[dong6241]

have/has/having/having been/has/has been/had/had been
can anybody explain me the concept of each one?
I tried to find the answer in the frequently asked section but i couldnt find what i was looking for.
I'm very much confused about the usage in each one of them.
I know have is a plural form of the verb and has is singular.
And have changes to has whenever the subject changes into 3rd person. [He,She,It]
This is all my knowledge of the function of have/has (possesive use of have/has)
I know have/has more usage than the possesive function.
If you wouldn't mind could you also explain me the other functions of have/has as well?
Thank you for your time and response

 

[bhaisahab]

have/has/having/having been/has/has been/had/had been
can anybody explain me the concept of each one?
I tried to find the answer in the frequently asked section but i couldnt find what i was looking for.
I'm very much confused about the usage in each one of them.
I know have is a plural form of the verb and has is singular.
And have changes to has whenever the subject changes into 3rd person. [He,She,It]
This is all my knowledge of the function of have/has (possesive use of have/has)
I know have/has more usage than the possesive function.
If you wouldn't mind could you also explain me the other functions of have/has as well?
Thank you for your time and response

"Have" is not the plural form. Verbs don't have a plural form.