Rhetorical Grammar is a wonderful resource for writers and teachers alike. I would recommend it to anyone who wishes to become more knowledgeable in the art of rhetorical grammar – understanding the grammatical choices available to you and the effects those choice have on the reader.
Although Rhetorical Grammar looks like just another guidebook or style guide when it comes to the rules of grammar, it really shows how the rules influence how readers perceive a writer’s meaning. So the rules aren’t just rules anymore – they’re a way of expressing what you really want your readers to focus on. And Kolln and Gray aren’t saying, “Don’t ever break the rules.” They’re saying, “Use readers’ knowledge of the rules to your advantage.”