Student or Learner
should we put commas here?
My friend,(?) Bob Sacamano,(?) had shock treatments.
Again, I agree with 2006: don't use commas if you have more than one friend.
(1) My brother, Tom, is an engineer. = I have one brother. The two
commas show that Tom is extra, non-essential information that can
be erased without affecting the basic meaning of the sentence:
My brother is an engineer.
(2) My brother Tom (pronounced loudly) is an engineer. = I have
at least two brothers. So I did not use commas. The word Tom is vital
information that cannot be erased. In other words:
It is my brother Tom who is an engineer, not my brother Joe.
I assume I can use comma in the following sentence even if I have more than one brother.
Tom, my brother, is an engineer.