Don’t use for to explain why

We don’t use for -ing to explain the reason or cause behind something.

Example

  • I work hard for improving my English. ❌
  • I work hard to improve my English. ✅
  • Turn the TV on for watching the news. ❌
  • Turn the TV on to watch the news. ✅

Use for to show purpose or function

Both to + infinitive and for -ing describe an object’s function (the purpose or intended use of an object).

Example

  • This machine is used for cleaning cars.
  • This machine is used to clean cars.
  • This is a special camera for photographing small objects.
  • This is a special camera to photograph small objects.

References