See this site:
2: We can't use this kind of participle clause if we're talking about one finished action which is not repeated:
- Not:
Who was the girl dropping the coffee?Instead, we use a normal relative clause:
- Who was the girl who dropped the coffee?
Could you explain "We can't use this kind of participle clause if we're talking about one finished action which is not repeated"?
What does "one finished action which is not repeated" mean?
There is no way to understand what the author was talking about.