The document discusses modifiers and how they can be misplaced or dangling in sentences. Misplaced modifiers describe something other than intended, making the meaning unclear. Dangling modifiers describe something not clearly stated in the sentence. The lesson provides examples of misplaced and dangling modifiers and how to correct them by placing the modifier next to the word it describes. Students are given sentences with these issues to identify, illustrate literally, and revise for clarity.