1 B1 ニュートラル
人や物の存在は知っているが、必ずしも十分なくわしい知識があるわけではないこと。
"I know of a good restaurant near the station, but I've never been there myself."
“
I know of no way to judge the future but by the past.
— Patrick Henry, speech to the Virginia Convention, 1775
分離不可