Is the sentence:
Did something happen yesterday after that (conversation)?
grammatically correct, or is a comma required after yesterday?
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1No number of commas, that, I put, absolut,ely anyw,,,,here in this sent,,,,ence,, can possibly change the fact that it is correct grammatically. They can make it harder to read. Or easier to read. And that is all they can possibly do. – RegDwigнt♦ Apr 9 '20 at 17:51
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1Punctuationally (I looked it up!), the comma is optional. Use it (or a dash) to signal a pause if you want to add a bit of drama or to show that the PP is an afterthought; leave it out if you want the sentence read in uninterrupted fashion. – Edwin Ashworth Apr 9 '20 at 18:12
