Please Help me in this teacher - Infinite + Past Participle

[rajan]

Dear Teacher,

Please have a look on these sentenses.

1. X is only the third woman to be nominated for best director.

2. X is only the third woman to have been nominated for best director.

3. The prisoners are expected to be released today.

4. He is to be congratulated on passing his exam.

He was to have been rewarded for handing in the stolen goods until it was discovered that he was involved with the criminal gang.

I have following problem.

a) When such type of passive voice we can use?. I have no knowledge about it specifically which I have underlined.

b) Please also tell me - can we use to be for "will be" as used in sentence # 3.

c) Can you please suggest me the active form of above passive voice.

Please guide me.

[Tdol]

1- It doesn't have to be passive- He was the first person to discover it. The one you have underlined has a meaning similar to 'who has been'.
2- Yes
3- They were going to reward him until...