答：In the English language, tense points to the temporal location of an event or a state of affairs. And English verbs have two tenses: the present tense and the past tense, which are termed simple present and simple past. Aspect reflects the way in which the verb action is regarded or experienced with respect to time. It draws attention to its temporal distribution within a particular time framework designated by a particular tense form that it must combine with. And there are two aspect forms: the progressive aspect and the perfective aspect.
