General Writing and Grammar Help/comma



Hope you are well!

A question about my letter. Why do you say that a comma is needed after "ago"?

"Mom came to my room a couple of minutes ago, on the pretext of opening the window."

I hadn't put any comma, but you say that the comma is needed. Why? Please explain your reasons.

Many thanks and all the best to you and yours!
Please keep in touch and enjoy life!

ANSWER: You don't need one; it's just my preference.

Have a good weekend!  

---------- FOLLOW-UP ----------

QUESTION: Many thanks.

Would you please explain why you prefered to use a comma?

Have a good weekend!

ANSWER: It calls attention to the implication that Mom came into the room on an artificial errand.

---------- FOLLOW-UP ----------

QUESTION: Thanks a lot.

I am curious to know more about the use of the comma in my letter. Would you please explain more about the comma you used after "ago"?

Please mention some more examples. I want to learn this use of comma.

Your curous student

It's a prepositional phrase.  If you put this at the front of the sentence, you need a comma.  I like one before it if you put the prep. phrase at the end.  Just a personal preference to add clarity, based on how the punctuation would be if the phrase were at the beginning of the sentence.  

As I noted before, it also aids the eye....and I like it for emphasis on the descriptive nature of the main clause that follows.


By eating dinner with us, he became our friend.
Without telling us why, he ate all the chocolate and left none for us.
Before you may go, you must do your homework.
Against my instructions, he borrowed the hat and put it on his head.


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Martha Beth Lewis


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