Come across – find something by accident
Yesterday I came across my old photos. I haven’t seen them in years.
Come along – accompany someone when going somewhere
We’re going to visit Alice. Want to come along?
Come back – return
I promised my mom to come back home at 3 p.m.
Come off – when something becomes separated or unstuck from another thing
The paint is starting to come off the wall in the kitchen.
Come on! – it can mean an encouragement for someone to do something / it can mean something like “Stop being ridiculous!”
“I don’t want to make a speech. I’m no good at it; everyone will laugh at me.”
“Oh, come on! Don’t be shy. I’m sure you can do it perfectly.”
Come out – appear / to be seen / to leave the inside of a place
The sun came out yesterday afternoon.
My cat is hiding under the chair and doesn’t want to come out.
The newspaper comes out every Monday through Friday.
Come over – come to someone’s house
If you come over tomorrow after school, I’ll give you back your books.
Come through – produce or deliver a result
I thought my favorite basketball team would lose the game, but the offense came through and scored 10 points in the last five minutes.
Come up – appear (often used if a task/responsibility appears unexpectedly, or when a topic appears in a discussion)
I’m sorry I missed your birthday party. Something came up at the last minute, and I couldn’t go.
I thought someone would mention the policy change, but it didn’t come up during the meeting.
Come up with – create / invent something
Every time I ask my son to do something, he always comes up with a list of excuses for why he can’t do it.
Come down with – get ill / to be sick
Lucy came down with a flue yestrday.