Sentences with an optative verb Ⅲ 能愿动词谓语句 Ⅲ The optative verb “可能”express possibility. Besides expressing ability, “会” is also used to express possibility. For example: 今年八月他可能去上海。 现在八点,他不可能睡觉。 明天他会不会来上课? 他得了感冒,明天不会来上课。