The document discusses the present continuous tense in English. It is used to describe actions that are happening now or ongoing at the present time. Specifically, the present continuous can express actions occurring right at this moment or actions that are in the process of happening but not necessarily at this exact second, such as longer term activities currently in progress. It provides examples of using the present continuous to talk about what someone is doing now with verbs like "eating", "skiing", or "not dancing", as well as longer term activities like "studying to become a doctor."