4. Analyze the figurative language: After getting my report card / I knew it was time to hit the books.
What it means is that...

"I knew it was time to hit the books" is a figurative language. It doesn't actually mean hit the books, in this scenario when the student gets his report card and says time to hit the books, it really means "time to read", or "time to study."

type of error:

the error in the sentence is a "dangling modifier". a dangling modifier is a phrase, word or clause that "dangles" because there is not target to modify. in this case, "after mopping the floor" is the dangling modifier since it has no word to modify. the noun "house" cannot mop the floor; therefore there is a mistake in the writing of the sentence.