Hello,
Could you tell why the following words
'then' have no commas immediately after them? Are they not connective adverbs and why does Sentence B have no punctuation between independent clauses?
Sentence A. Why don't you hire a car?
Then you'll be able to visit more of the area.
Sentence B. She's been very busy at work and
then there was all that trouble with her son. (These two sentences are examples from the Oxford Advanced Learner's Dictionary, 7th edition.)
Thank you.
With best wishes.