He played tennis today, but on the day before, he went golfing.
On the day before he went golfing, he played tennis.
On that day I'd been learning to drive, I hit a bump in the road.
Are both these correct? The last example is a comma splice is it not. So it's not ON that defines it as propositional but BEFORE?
And these too?
Then it occurred to me, I don't need to to win the lottery to be happy.
The last sentence is a comma splice. Better to write the following. Then it occurred to me--I don't need....
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The last sentence is a comma splice. Better to write the following.
Then it occurred to me--I don't need....
Then it occurred to me: I don't need....
The other three sentences are not comma splices. "On" makes each of the phrases or clauses beginning with "on" prepositional. Comma splices don't occur due to prepositional phrases.
Note that "on" is not necessar