show up 
phrasal verb with show verb uk/ʃəʊ/ us/ʃoʊ/ showed | shown
 informal (also show)      
B1 (尤指迟些时候或出其不意地)到达,露面
to arrive somewhere in order to join a group of people, especially late or unexpectedly
  I invited him for eight o'clock, but he didn't show up until 9.30. 我请他8点钟来,可他直到9点半才露面。 
 We were expecting 30 people to come, but half of them never showed up. 我们以为会来30人,但有一半人根本没露面。 
 - More examples
 - How many people showed up to the meeting?
 - He was rude and unhelpful and always showed up late to work.