The Metamorphosis deviate from the standard structure of Freytag's pyramid because more than one scene can be considered the climax.
The standard structure of Freytag's pyramid is :
-Exposition
-Rising Action
-Climax
-Falling Action
-Resolution
Having more than one climax makes a story or plot to have a different structure, as we can see in The Metamorphosis.
I think its B. Joe's deep desire to please Pip.
Because Pip already knows he can not read but he wants her to be pleased by him, so he says he can read.
