G：It’sso great seeing you guys again.
C：Yeah.
B：Iagree.
G：Ican’t believe it’s been twenty years since we were all in college together.
B：Youknow something, I remember it as if it were yesterday.
C：Ido … I was just going to say, as if it were yesterday.
口语中Youknow something，表示什么？
