While using present continuous tense should I end it with time point (based on the grammar rules)?
- He is studying.
- He is studying now
I was told in the past the when having present continuous tense I should add time point such as: now, right now, at the moment, or at present etc. But practically speaking I don't see that people follow such rule. What is the explanation for that? There are three possible choices: 1) I was told wrong thing 2) people wrong, 3) I didn't understand what I was told.