knowledge搭配的介词是on,about还是of?

一般都是接of
have a knowledge of 懂一点；知道;了解；对…熟悉
I have a thorough knowledge of the English language.我精通英语.
I have a knowledge of astronomy.我懂一点天文学.
He has a good knowledge of London.他对伦敦很熟悉.
he has a superior knowledge of magic.他有高人一等的魔术知识.
I have only a sketchy knowledge of geography.我对地理只是一知半解.