need+p.p

Question

[what are the specific questions you need answered?]

In the above sentence, there is past perfect form 'answered' follows 'need'. I can only assume it's the shortened form of [to be answered]
or is there any other grammatical rule for 'need with past perfect tense? I thought 'need' companies to- infinitive, so I corrected the sentence into 'you need to answer?' but they say it's just right one like that.
Then what kind of difference comes along between 'need to answer?' and 'need answered?" I can only sense very obscure difference.
It would be grateful If I can get grammatical explanation.
Thank you in advance!

CalifJim · Accepted Answer

Anonymouspast perfect form 'answered'

Your terminology is not correct. The past perfect is "had answered". It consists of the auxiliary verb "had" and the past participle"answered".

Anonymousit's the shortened form of [to be answered]

Yes.

Anonymousdifference ... between 'need to answer?' and 'need answered?"

It's the difference between 'need to answer' and 'need to answered', which is the difference between the active (to answer) and the passive (to be answered). If I need to answer, I must speak; I must give the answer. If I need to be answered, someone else must speak; someone else must give the answer to me.

CJ

AlpheccaStars · Answer

You will also often see the active form if the questioner is offering the answers:

What are the specific questions you need me to answer?

need+p.p

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