1.This is because he is eliminated solely because he is not useful to helping others.
2.This is because he is eliminated solely because he is not useful for helping others
I wonder which sentence is correct English.
I actually have come across both "useful to ing" and "useful for ing", but it seems like the latter is much more frequently used, seeing the count of the latter when I google it, but as I have come across both, I think they're all correct English.
I actually have found "useful to ing" sometimes used in books by native English speakers.
The first sentence is original, and the second one has been edited by exchaining "to" with "for".
Plus, " They are useful to many purposes. ", I'm not sure whether this sentence is correct.
I found this in an English book by an English author as well.
fire1 "useful to ing" and "useful for ing" "useful to -ing" is rarely seen in comparison to "useful for -ing". If I were you, I'd forget about the version with "to". fire1 They are useful to many purposes.
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fire1"useful to ing" and "useful for ing"
"useful to -ing" is rarely seen in comparison to "useful for -ing". If I were you, I'd forget about the version with "to".
fire1They are useful to many purposes.
This sounds literary and/or old-fashioned to my ear. Most of the citations of this expression on Google Ngrams