First of all, <em>revise </em>means <em>to change</em> something in a text. To revise a sentence it is necessary to focus on the structure of it, meaning that every part must agree with each other. It is also important to focus on language, meaning that some words or expressions might not be proper for the target audience. Another important stage is spelling, since we avoid typos and mistakes. The sentence structure and punctuation are also important since the sentence can be incomplete or seem non-logical if this stage is not verified.