This document discusses the present perfect continuous tense in English. It is used to talk about actions that began in the past and continue into the present or have just finished. Examples are provided to illustrate the difference between the present perfect continuous and present perfect simple tenses. Guidelines are given for when to use action verbs versus non-action verbs in the present perfect continuous construction. Common errors involving the tense are identified and corrected. Exceptions for the verbs "to live" and "to work" are noted, as they can be used with either the present perfect simple or continuous tense.