Good afternoon! I really need your help please. I will be sitting my kid for independent schools admissions in a year time, and one of the main requirements is a broad vocabulary and rather sophisticated English. Could someone please define the meaning of "sophisticated English" in relation to a 4yo kid, and how can I make her sound more sophisticated? I'm not English and wasn't born in UK, so really need advise from native speakers and language specialists. Thank you very much for all your comments!