Sometimes the apostrophe is a possessive, and sometimes it is an indicator for 'it is' as it's. I could have used either after 'sometimes' in the previous sentence, but sometimes one of the forms is less awkward, so choose the less awkward form.
Possessive; Jones's house. The house that belongs...
Thanks, that's the one that drives me NUTS!
I was on a date April of 1997 with a gal who studied Literature at Cambridge College in England. I had mispoken a word and she corrected me. I thanked her.
We're married and have been together ever since! 💗