Present tense is a verb form which is marked by time (tense).
The present tense is used for actions in a time which is happening now. In order to explain and understand present tense, it is useful to imagine time as a line on which the past tense, the present and the future tense are positioned.
The use of present continuous tense:
- a. For something which is happening at the same time of speaking
- b. For something which is happening at around the time of speaking but not necessarily exactly at the time of speaking
- c. For something which is happening at period around the present (today, this season)
- Sangmeister, Lisa. (2009). Past Tense in English: From OE to PDE, p. 11.