Composing the First Draft with Effective Sentences Once you have researched, organized your information, and selected an organizational pattern, you are ready to compose your message. To compose a successful message, you must use effective sentences. Being able to understand sentence structure and identify sentence types will help you write more effectively. Read the following sentences, and then fill in the blanks. The presenter used visual aids to engage the audience. This is a sentence. The subject of the independent clause is and the predicate verb is____________.