Can you provide some proof...,

[Silverobama]

I’ve been organizing some local English clubs for many years and I never earn a cent from it. Today someone said “You’ve benefitted a lot from organizing those clubs”, when she said “benefit” she meant “earn a lot of money and welfare”. I was very angry and I said to her “Can you provide some proof to prove that I’ve benefitted a lot?”

Is my italic sentence natural?

 

[Matthew Wai]

Can you provide proof that I have benefited a lot?

The verb "benefit" does not mean "earn a lot of money and welfare" according to Longman.

benefit | meaning of benefit in Longman Dictionary of Contemporary English | LDOCE

benefit meaning, definition, what is benefit: an advantage, improvement, or help that ...: Learn more.

www.ldoceonline.com

 

[emsr2d2]

I’ve been organizing some local English clubs for many years and I've never earnt a cent from it them.

Although using "from it" at the end could refer to "organising", it's more natural to use "English clubs" as the referent and say "from them".

Today, someone said “You’ve benefited a lot from organizing those clubs”.

Note the correct spelling of "benefited". This should end with a full stop. Originally, you had a comma splice.

When she said “benefit”, she meant “earn a lot of money and welfare”.

How do you know that's what she meant if that's all she said? Also, you can't "earn welfare".

I was very angry and I said to her “Can you provide some proof to prove that I’ve benefited a lot?”

If you use "proof", you don't need to say "to prove" - the noun means "something that proves". Your response is unnecessarily long. You could have said "Prove it!" or "Can you prove that?" If you wanted to be a bit less confrontation, you could have said "What makes you think that?"

I suspect you've found a lot of benefits to organising those clubs over the years - new friends, helping people, a busy social life, organisational experience, to name but a few.

 

[Matthew Wai]

If she had meant “earn a lot of money”, she should have said "You’ve profited a lot by organizing those clubs".

 

[Piscean]

If she had meant “earn a lot of money”, she should have said "You’ve profited a lot by organizing those clubs".

That does not necessarily mean earnt a lot of money.