1.
In all honesty/frankness/sincerity,ie speaking with the greatest honesty,etc
最诚实地/坦白地/真诚地
2.
Not to put too fine a point on it, I think he's mad.
坦白地说，我认为他疯了。
3.
Come, answer frankly."
来吧，坦白地告诉我。”
4.
So I'm gonna be completely candid with you.
那我就坦白地跟你说.
5.
I'm going to be very frank with you.
我想非常坦白地对待你。
6.
I confess I felt a little shy.
坦白地说，我倒有点害臊。
7.
I told her straight out that she was wrong.
我坦白地告诉她,她错了。
8.
I must be plain with you.
我必须坦白地对你说。
9.
Frankly speaking, you are right.
坦白地说，你是正确的。
10.
You'd better own up to your faults.
你最好能坦白地认错。
11.
Frankly, I'd just as lief stay.
坦白地说，我愿意留下来。
12.
Therefore, be honest and say what you want to say clearly.
因此，要坦白地、楚地说出你想说的话。
13.
honestly, I don't believe it; candidly, I think she doesn't have a conscience; frankly, my dear, I don't give a damn.
坦白地说，我不相信；坦白说，我认为她没良心；亲爱的，坦白地说，我不会责备你的。
14.
Quite frankly, I'm not surprised.
坦白地说, 我并不感到意外.
15.
Frankly, I don't like the color.
坦白地说，我不喜欢这种颜色。
16.
Frankly Sandra, I'm not very pleased with you.
坦白地说，我对你不太满意。
17.
I feel it my duty to speak frankly to you.
我觉得我有义务要坦白地对你说。
18.
Frankly, we can't agree with your proposal.
（坦白地讲，我无法同意您的提案。