While using present continuous tense should I end it with time point (based on the grammar rules)?

For example:

  • 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.

  • You were misled. You could specify the time if this were important but it's not necessary. E.g Everybody is looking for John who should already be here. He is waiting in the hall now, as we speak Jun 21, 2018 at 21:55

1 Answer 1


Here is what MyGrammarLab elementary by M.Foley and D.Hall says about the use of time expressions in question:

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You see, we often use such words and phrases, not always - only when it's necessary.

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