The narrator is Reliable because he willingly relates details of his breakdown into insanity
The prepositional phrase for this sentence is "go until Friday." The word "go" is a preposition. Think of it as a squirrel and a log. To find a preposition, say "The squirrel (went) [insert preposition] the log." If it makes sense, it is a preposition. Then just find the phrase to go along with it!
Answer:
a transient error in linguistic development in which the child attempts to make language more regular than it actually is. An example is saying breaked instead of broken.