Summary of CommasPlease help me understand which rule of commas applies in these examples:
1. I frowned, but William just turned his head, trying to lead my attention to the lady with the question.
2. She was still leaning forward, tapping her fingers on the table, and waiting for my reply.
In sentence 1, do I have an indroductory element, No, the first comma is a joining comma. plus a ?? -- don't know what the second one is. bracketing comma
In sentence 2 are my commas correct, and what do you call them? Yes, and they are clearly listing commas.
a. Bracketing comma (parathentical element, or appositive)
b. Listing Comma
c. Joing comma (between a conjunction)
d. Gapping Comma (when you leave words out)
e. Comma to set off an introductory element I think a lot of people call this a bracketing comma. Bracketing commas come in pairs in the 'middle' of a sentence, but are single if they isolate the beginning or the end of the sentence.