This document provides an introduction and overview of the present continuous, present perfect, and present perfect continuous tenses in English. It begins with definitions and examples of how to form sentences in the present continuous tense, including using the present continuous to talk about future plans. It then covers the present perfect tense, providing examples of forming sentences and using question words. Finally, it discusses the present perfect continuous tense, including how to indicate time frames using words like "since" and "for". The document provides practice exercises correcting example sentences for each tense.