You ought to be ashamed of yourself.

Source: Tatoeba

I lied because I was embarrassed.

Source: Tatoeba

You should be ashamed of your stupidity.

Source: Tatoeba

You should be ashamed of your ignorance.

Source: Tatoeba

I'm ashamed to be a woman.

Source: Tatoeba

He is very much ashamed of having behaved so badly.

Source: Tatoeba

His face reddened with shame.

Source: Tatoeba