The same message can be expressed in wildly different ways depending on who you’re talking to.

Notice

  • Very formal: “I would be most grateful if you could kindly provide the requested documentation at your earliest convenience.”
  • Neutral/professional: “Could you send me the documents when you get a chance?”
  • Casual: “Can you send those docs over? Whenever’s fine.”
  • Very casual (close friends): “Can you shoot me those docs? No rush.”

Rule

Rule: register exists on a spectrum, not as a binary “formal vs. informal” switch. A C2 speaker can place any sentence accurately on this spectrum and slide it up or down depending on the audience, purpose, and medium (email vs. text vs. speech).

Practice

  1. Rewrite this very formal request in a neutral, professional way: “I would be most grateful if you could kindly confirm your attendance.”
    Answer: Example: “Could you confirm whether you’ll be attending?”
  2. Rewrite the same request very casually, for a close friend.
    Answer: Example: “You coming or not?”
  3. What features generally make a sentence sound more formal (structure, vocabulary)?
    Answer: Longer, more complex sentence structure; more Latinate/formal vocabulary; passive voice; fewer contractions.
  4. Why is register control considered a C2, not a B2, skill?
    Answer: Because it requires flexible, precise judgement across many contexts — not just knowing one “correct” formal or informal form.

Connect

Test your sense of the register spectrum with the Vocabulary Quiz.

Try Vocabulary Quiz →

CEFR: C2

Azizul Hakim
Latest posts by Azizul Hakim (see all)
PreviousNext