Writing Complex Sentences
Too many simple sentences in a row sound choppy. You can create flow and variety by combining two simple sentences into a complex sentence. Use a subordinating conjunction (after, although, as, because, before, if, since, so, when, where, while, until, unless) or a relative pronoun (that, which, who, whose).
Truman finishes exercising. He feels alert.
After Truman finishes exercising, he feels alert.