In negative sentence, the order of the subject and object is the same as in the positive sentence. The difference in negative sentence is that it must have a primary auxiliary or modal auxiliary. For example, Leonardo has not finished his homework yet. Jim is not in the office. Karl was not found among his friends in the football practice lesson at the school's field. These are examples of primary auxiliary verbs. Examples of model auxiliary verbs are she may not be interested about going to the concert. Joey could not understand the timetable on the bus stop timetable board.