I'm ashamed to say that I lied to her.

我真不好意思说我向她撒了谎。

《牛津词典》

I am ashamed to say so.

这样说我不好意思。

youdao

I am ashamed to say that my family all survived. I cannot feel glad.

我全家都幸存下来了，但我觉得很惭愧，我不觉得庆幸。

youdao

"I left it all to the last minute and I'm so ashamed to say it but I did.

VOA: standard.2009.12.28

I'm ashamed to say I hadn't fully appreciated this point before making the film.

BBC: Should Britain let go of London?

Today Mr. Romero Ellner is pure zelayista, hungry for power and not ashamed to say so.

CENTERFORSECURITYPOLICY: Revolutionary Anti-Semitism

No, we've got two young children, we just don't seem to.. you know, much as I'm ashamed to say, it seems like too much hassle.

BBC