It's OK to use incomplete sentences. Really Forget what you learned in school. When it comes to writing sentence fragments, even Shakespeare broke the rules ...

Grown-ups do sometimes use bad sentence fragments — clusters of words meant to be complete sentences but that don’t quite qualify. They can be truly awful. So here’s a refresher.

Actually, that should be "Don't use sentence fragments!" so as not to break its own rule. What is a sentence fragment? Anything that looks like a sentence — starts with a capital letter and ends ...

But there’s really only one kind of sentence that actually works: a sentence that carries the reader forward from the previous sentence. This is harder than it sounds.