Modifiers are describing phrases or clauses which support or tell more about your idea. Therefore, they have to be placed next to what they modify. Misplaced Modifers: Dangling modifiers are those ...
brendan-c on flickr John ate a slice of pepperoni pizza, and drank a bottle of beer. If that sentence doesn't make you involuntarily scowl, then you do not have a proper understanding of commas. Yet ...