I am not a native English speaker but I love English language. I have a great interest especially in English grammar. I read and write a lot. Recently I have come across certain grammatical phenomenon. To illustrate my question I use an example:
All of the group WAS sittting....
All of the group WERE sitting....
Personally I would be inclined to use the first one. Could I use the second one as well? If yes, when it would be acceptable?
What is the grammatical phenomenon? I would call it plural grammatical allusion.
Ahead many thanks.