Mark the boundary with a line, if you're proofreading on paper. Double-check that the boundary contains the appropriate punctuation and transition words. If two complete sentences appear next to each ...

When you are writing, words are grouped together into sentences. There are a few simple ... Er, but we still need a verb, which is a doing word. JavaScript is required to view this activity.

How can you create a balance between short and long sentences, and how does that change the flow of ideas in your writing? This sentence has five words. Here are five more words. Five-word sentences ...