Mrs. Dursley pretended she didn't have a sister, because her sister and her good-for-nothing husband were as unDursleyish as it was possible to be.
This is from Harry Potter. I know the meaning of the sentence and what I really care about is the part as unDursleyish as it was possible to be. I want to compare the difference between these three versions:
- as unDursleyish as possible
- as unDursleyish as it was possible
- as unDursleyish as it was possible to be
Question 1: Do they mean the same thing?
Question 2: What does the to be in #3 mean? Because there are 2 to be (was & to be) in the same sentence, what's the difference in meaning between them? It really confuses me to end a sentence with to be where there is another one already in the same sentence.