She doesn’t have to feel ashamed.

她没必要感到羞愧。

You may also feel ashamed.

你可能还会感觉羞耻。

When did you last feel ashamed?

上次觉得羞耻是什么时候？

As for you, you should feel ashamed.

至于你，你应该感到惭愧。

They feel ashamed just for being tempted.

他们只因受诱惑便感到惭愧。