 on=agreement
-A person has to have understanding __ demographical background about the listener.
My opinion: of is the correct form; on would be wrong. If we are saying that we need to understand (=grasp) something, the preposition is of, not on, above. If we use on after understanding, it would be talking about an agreement (=accord):
eg a tacit understanding on the need for a pay rise
Do you agree with me?
Last edited by susan53 : Oct 19th, 2015 at 01:51 am.
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