He hasn't done an honest day's work in his life.

　　他一輩子從未努力認真干過一天活兒。

　　To be honest with you, I don't remember what he said.

　　跟你說實話，我不記得他說過什么了。

　　To be perfectly honest, I didn't want to go anyway.

　　說真心話，無論如何我是真的不想去。

　　We know her to be honest.

　　我們知道她很誠實。

　　To be honest, it was one of the worst books I've ever read.

　　說實在的，那是我讀過的最差的書之一。