For the "Critical Reasoning" component of the verbal section of the test, MBA.com reports that you will have to read a passage and then answer questions about it. For this section, Online Math Learning.com states that one of the most important things you can do is to read the questions first, then read the passage second and look specifically for the answer you need for the question. By doing so, you eliminate much of the unnecessary information you would pick up by simply reading the passage and then trying to answer the questions. Look at the answer choices given and try to find the information in the passage that most matches the choices you will have to answer the question.
According to MBA.com, a second section of the test deals with reading comprehension. In short, this measures your ability to comprehend or understand something that you have read and answer questions about it to check your understanding. There are several types of passages you might be asked to read---sciences, history and even business-related passages. Try to skim the passages before answering the questions to get an idea of the tone and information presented, and highlight areas that seem important. When you read the questions, match up the answers with the information you uncovered when you skimmed the passage and made your notes.
The remaining section of the GMAT verbal section is the sentence correction section according to MBA.com. Online Math Learning suggests that the best tip here is to check each answer for correctness. A correct answer will be grammatically correct, structurally correct and will not change the meaning of the sentence in any way. If you sound out each potential answer in your head, you will be able to get a good idea of which ones sound correct and which ones do not.