I've been doing some research and I've been struggling to find an answer to a question I have. There are four types of sentences: Simple, Compound, complex, and compound-complex. My question is, 'is there a rule of thumb on what warrants the usage of each type of sentence? Or is it just a stylish approach totally dependent on the writer's own rules?" @Wreybies you seem like the man who would know. I've looked and looked, and I've found what elements compose each of them, but not what warrants the usage of say A Compound sentence instead of a Complex. -OJB.