that is regularly occurring in the present circumstances. Verbs in the present continuous tense indicate actions that are currently happening and will continue for a period of time. In the sentence, "she is walking home," the verb phrase "is walking" is in the present continuous tense because it refers to a current action that will continue until a certain endpoint (when "she" reaches home). Verbs in the present perfect tense indicate actions that started in the past and is completed at the time of speaking. For example, in the sentence, "She has walked home," the verb phrase "has walked" is in the present perfect tense because it describes an action that began in the past and is finished as of the current reference to the action. Finally, verbs in the present perfect continuous tense refer to actions that have been continuing up until the current time, thus combining the characteristics of both the continuous and perfect tenses. An example of a present perfect continuous verb phrase can be found in the sentence, "she has been walking this route for a week now," where "has been walking" indicates an action that was happening continuously in the past and continues to happen continuously in the present. See also Arrow of time Entropy Deixis Near real-time computing Observation Philosophical presentism Self Specious present Time perception References Citations and notes General information Greene, Brian, (2004). The Fabric of the Cosmos: Space, Time, and the Texture of Reality Knopf. Stepath, Katrin, (2006). Gegenwartskonzepte, Würzburg. External links The Experience and Perception of Time Philosophy of time Time fr:Instant