Necessary is not a verb and does not have participle forms.
The word 'needed' is the past participle, past tense of the verb to need.The word need is also a noun form, a singular, common abstract noun; a word for circumstances in which something is necessary; a necessity.The noun form for the verb to need is needing.
The complete verb is 'are searching'; are is the auxiliary verb and searching is the main verb.
a verb
verb is word that tells about and action ( walk ) or a state ( love ) . I guess a non verb is any other word that is not a verb.
what are the threeprincepal of the verb
The verb form is to necessitate.
The verb form is to necessitate.
no it is not...
Necessary is not a verb and does not have participle forms.
The adjective form of necessity is necessary.
Yes, this is necessary.
Help is a verb - as in to give what is necessary to accomplish a task
It's an adjective.
As a verb e.g. " It was necessary to recalculate the expense budget " .
Finance is both a noun: The project will only go ahead if they can raise the necessary finance. and a verb: The project was financed by grants.
"Neither her associates nor the doctor thinks the surgery is necessary" is correct. When more than one subject of a verb is joined by one of the conjunctions "or" or "nor", the verb should agree in number with the alternative subject closest to the verb in the sentence. "The doctor" [singular] is closer to the verb "thinks" than is "her associates" [plural].