A dangling modifier is an adjective that is out of place, usually appearing at the start or end of a sentence, that doesn’t describe the right word.
This highlights the power of word order and sentence structure as sentences with dangling modifiers do not make much sense.
Cluttering up the desk, our receptionist threw out all the junk mail.
This doesn’t sound right to you because it sounds as if the receptionist is cluttering up the desk by throwing things away. The word order is leading you to an incorrect assumption.
Our receptionist threw out the junk mail that was cluttering up the desk.
Now we can clearly tell that throwing out the junk mail is keeping the desk from remaining cluttered.