to be honest还是honestly?

to be honest
spoken used when you tell someone what you really think:
口语，用于你要告诉某人你的真实想法
To be honest, I don't like him very much.

Honestly
spoken used when you are shocked or annoyed by something someone has said or done [= really]:
口语，用于当你被某人的话或其所做的事震惊或者烦恼
Honestly! Do you ever listen?

这是一个评述性的主位，可以是to be honset,...
也可以是honestly (speaking),...

to be honest

honestly adv. 真诚地, 公正地

to be honest或者honestly speaking

还是前者好一点啊