一个表达“表达真实想法”，一个表达“被震惊到”。
to be honest
口语话表达，用于你要告诉某人你的真实想法
例句：
To be honest, I don't like him very much.
Honestly speaking
口语话表达，用于当你被某人的话或其所做的事震惊或者烦恼
Honestly speaking! Do you ever listen?
歌名：Honestly
歌手：Kelly Clarkson
所属专辑：《Stronger》
发行时间：2011-10-24
歌词：
Could you love somebody like that
Could you attract someone like that
Could you go where people can see someone like me
Could you do that
Would you face me, make me
Listen to the truth even if it breaks me
You can judge me ,love me
If you are hating me
Do it honestly
All I see are stepford like lives
Meals and knifes
Beautifull lies
Bring me now the green in your eyes
Perfect disguise for envy and pride
Face me, make me
Listen to the truth, even if it breaks me
You can jugde me, love me
If you are hating me do it honestly
Face me, make me
Listen to the truth, even if it breaks me
You can jugde me, love me
If you are hating me
Would you face me, make me
Listen to the truth even if it breaks me
Judge me ,love me
If you are hating me
Do it honestly
Do it honestly
being honest
做人诚实可靠；诚实诚实；因为忠厚；做一个正直的人
to be honest
英 [tu: bi: ˈɔnist]美 [tu bi ˈɑnɪst]说实话;老实说；说实话；说实在的；实话说
1. Don't punish your child for being honest.
不要因为你的孩子说了实话而处罚他。
2.She's always noticed. But then, to be honest, Ghislaine likes being noticed.
她总是受到关注。但是说句实在话，吉莱纳喜欢被人关注。
3. I'd rather get it out the way, to be honest.
老实说，我情愿把它处理掉
4 .Being honest,my father never tells lies but to be honest, I don't think it a good way to live.
【针对你的扩展】：这是避免重复的问题 你注意到后面有一个“to be honest”了吗？
正如强调句：It is him that is the greatest man who has ever lived. 虽然强调句who 和 that都可以
但后面已经有who了 我们就用that！
扩展
后面那个to be honest是我加的.. 原题是______honest,my father never tells lies but ___honest,i don't think it a good way to live 问2空分别填什么
补充
对啊 所以前后两空应该不一样啊 莫非它有两种前后两空不一样的选项？
扩展
是啊，选项就是前后不同的2种。。。
那是一种固定的语法结构，是副词+形容词的构成，例如：Extremely appreciated, Well noted...
这句话其实是这样的
I have to be honest and （I have to ）say the job doesn't suit me.
这是同一句首的两个并列成分。
“我不得不诚实， 并且我不得不说这工作不适合我。”句子是对的。
但是更加简便的说法可以是：
1.I have to be honest to say that the job doesn't suit me.
2.To be honest, the job doesn't suit me.
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?
看到honest后面的reliable就知道此处应该用形容词构成系表结构了。
扩展
有没有特定情况是要用形容词作表语，构成系表结构？