A word in brackets, such as somewhere or something, means that we can use the phrasal with or without that word.
come across somethingTo find or discover something.
She had never come across vinegar on chips before she visited Britain.
come across asTo seem or appear to be like something.
He comes across as a nice man but he can be very unpleasant sometimes.
I’ve met the new boss and he comes across as being very nice.
come back (somewhere)To return.
I came back home because I had forgotten my mobile phone.
Steve, come back immediately!
come down with somethingTo become ill.
I think I’m coming down with a cold. I feel terrible.
come out with somethingTo introduce something.
Apple have come out with a new design for the iPad.
come out in somethingTo have a medical condition on the skin, such as a rash or spots.
I’ve come out in these horrible red spots.
come roundTo visit someone.
What time will you come round tonight?
come through (something)To survive something.
She came through the operation very well.
come upSomething unexpected happens.
Something has come up. Sorry, I have to go home straight away.
come up withTo have an idea or a suggestion.
During the meeting we came up with some good suggestions.
John came up with a good idea.