1
My brother keeps to take my things without asking.
My brother keeps taking my things without asking.
Use keep + -ing when an action continues or happens repeatedly: ‘She keeps forgetting her keys.’ Do not use to + verb after keep with this meaning.
2
The doctor kept us to wait for an hour.
The doctor kept us waiting for an hour.
When someone makes another person wait, use keep + person + waiting: ‘Sorry to keep you waiting.’ Do not use to wait in this pattern.
For more patterns with an object and an -ing verb, see our grammar lesson on verb patterns.