He was ashamed of what he had done.
Here is one example of such a sentence: 'You are right to feel ashamed of your behaviour towards your parents; it has been appalling.'
the ashamed children relinquished their stash of candy.
Patty was extremely ashamed.
To use ashamed in a sentance, you could say, I hope that you are ashamed of yourself, or, I feel very ashamed at what I did.
I was ashamed of the fact I cheated in my exam
He was ashamed of himself because he did not study for the exam.
The child was ashamed to tell her mother why she had to serve a detention at school.
One should be ashamed to ask a question that could so easily be answered with a simple google search.
I discredit my friend from the spelling bee contest and I am ashamed
Feeling ashamed and contrite, I apologised for treating him so rudely.
The teacher's dismay at Billy's answer made him feel ashamed.
The word patronize is a verb. A sentence would be: Ted was not ashamed of his disability, and did not want the other students to patronize him.