There was no possibility of taking a walk that day. we had been wandering, indeed, in the leafless shrubbery an hour in the morning; but since dinner (mrs. reed, when there was no company, dined early) the cold winter wind had brought with it clouds so sombre, and a rain so penetrating, that further out-door exercise was now out of the question.
what is the narrator's point of view?

third-person limited
third-person objective
first-person
third-person omniscient

It's is a first-person point of view.

Explanation:

Identifying the first-person point of view is quite easy, especially if compared to identifying the many types of third-person ones. A narrative done from a first-person perspective will used first-person pronouns ("I" and "we"), since the narrator also takes part in the story. In third-person narratives, first-person pronouns can be used in lines said by the characters, but not by the narrator. It's worth mentioning that first-person narrators cannot be fully trusted. Their story will be permeated by their own feelings and biases.

As we can see in the passage we are studying here, the perspective is a first-person one. Notice the use of the pronoun "we":

There was no possibility of taking a walk that day. We had been wandering, indeed, in the leafless shrubbery an hour in the morning...

to save the day, harry must get past a scary three-headed guard dog.

i think the answer is invented words, rhyming knack, alliteration, and, metaphor.