We can use a preposition immediately after a noun, an adjective, or a verb in a sentence.

After noun

  • The hostages didn’t give up hope of being released alive.
  • The people are unlikely to forget your kindness to them.
 

After adjective

  • None of his relatives and friends believed him guilty of this terrible crime.
  • Not being confident about their future, they decided to emigrate.
 

After verb

  • The audience laughed at her funny jokes.
  • She doesn’t seem to worry about anything in life.