Phrasal verbs that are intransitive are not followed by a noun or an object.

Example:

  • We invited them to join in.
  • (No noun or object follows the phrasal verb.)
  • When she heard what happened, she broke down.
  • (No noun or object follows the phrasal verb.)
  • He shouted to them, "Hurry up!"
  • (No noun or object follows the phrasal verb.)