Present tense corresponds to three English present tense forms.
Per esempio:
Parlo Italiano
I speak Italian
I am speaking Italian
I do speak Italian
Answer the following question:
Da Quanto tempo parli italiano?
How long have you been speaking Italian?
Present tense also for something started in the past, and still going.
Parli Italiano da un anno.
I have been speaking Italian for one year.
Using “da + time expression” indicates how long.