so / such

The rule here is simple:

  • so + adjective
  • such + adjective + noun (person/object described)

    Compare these sentences:

  • Their dog is so cute.
  • They have such a cute dog.
  • Her kids are so obedient.
  • She has such obedient kids.

    Both so and such can be used in sentences where we add that + result:

  • My teacher is so patient.
  • My teacher is so patient that she helps students for hours after class.
  • That restaurant has such good food.
  • That restaurant has such good food that it’s always full of people.