1.The appointment board is the group of people who does the appointing.
2.Mr.Fred complained about Alex’s having come to class late.
3. I couldn’t understand his not wanting to go.
I don’t undestand why there are gerunds in these sentences.Why not nouns? The use of gerund here is standard?That can be applied for any verbs? Please tell me the rule.
No, that’s not what I wrote. I wrote that gerunds are verbal nouns. I didn’t write that every time you want to use a noun, you can turn it into a gerund. Why have you changed what I have written?
In short, if there aren’t nouns, I can use gerunds instead. Right? (any cases)
If there are nouns,but I don’t want to use them, can I use gerunds instead? (any cases)
You cannot arbitrarily say that if you don’t use nouns, you can use gerunds. You are talking about two separate grammatical terms which have different associations and different functions. Your comments are far too general and wideranging and cannot be answered with a simple yay or nay. If you have a specific question, please address it.