Present progressive tense describes things that happen at the moment of utterance, temporary situations, habits, definite future plans and situations that change gradually. It is formed by with the auxiliary "have" followed by the main verb with an "-ing" suffix.
The progressive aspect is appropriate when an action has started in the past, continues occurring in the present and ends in the future. This describes a current action that ends shortly after the time of utterance or one that is taking place over a long period of time. In describing habits, the progressive aspect indicates something that happens repeatedly, especially when associated with irritation or annoyance. Non-continuous, or state, verbs cannot take the present progressive tense.