– used as a comparison
older than I am
easier said than done
– at that time , that time or at the time mentioned
Mom will be home at noon, but I’ll be home before then.
Dad is coming home early today. Only then we would start playing.
Back then, my brothers fight a lot.
– indicates what happens or what happened next or what should be done next
I bought a pen, and then a paper.
Do your homework, and then you can watch tv.
First take off the sticker, then wipe it.