The second carries a slight note of displeasure or concern, that is all.
New words, one handy idiom, and a 2-minute quiz — delivered to your inbox to keep your streak alive.
imantaghaviThe teacher's guide has presented the following clarification over the two mentioned sentences:1- There is a man but we don't know which one.2- There is a man but we don't know who it is or what it is and why he is here.I think your guide was attempting to reach the same distinction but did a poorer job of it.