Jan, thanks for your reply. Jan and Shann, thanks for continuing to discuss this complicated topic.
glorybee wrote: But when you add the verb, the second part of the sentence becomes independent (with an implied "she').
I am still having difficulty with the placement of a comma after the independent clause but before the dependent clause. If I understand the website that Shann linked to, a comma is not needed if there is no subject in the second clause.
I also located a reference that seems to agree with Shann's: http://www.grammarbook.com/punctuation/commas.asp
But Jan mentions the "implied
she"--the "implied subject."
Still another example from my manuscript:
“By then, we’ll know more people, and have a better idea who to talk to.”
So am I correct in stating that the implied subject in the second clause is "we". Hence the comma after "people"?