Using "Prevent"

Prevent is often followed either by a possessive adjective + gerund or by an object + from + gerund. Prevent can also be followed by the gerund directly when the subject is unnecessary, and it can be followed by a noun.

Examples
  • You can't prevent my leaving.
  • You can't prevent me from leaving.
  • I want to prevent his getting sick.
  • I want to prevent him from getting sick.
  • This campaign is designed to prevent drowning.
  • Preventing stealing is our main goal this year.
  • We are working to prevent forest fires.
  • This vaccine will prevent malaria.