You'd have to be sad to wear a shirt like that.

你穿着那样的衬衣显得老气。

《牛津词典》

Because I have no right to be sad.

因为我没有权利悲伤。

youdao

I am going to be sad when they finally get a name for it.

我会感到很伤心的,如果他们最后给它起名的话。

youdao

Then,the Crimean War broke out. I felt that sad for him that there had to be a war.

VOA: special.2010.03.27

I am going to be sad when they finally get a name for it.

我会感到很伤心的,如果他们最后给它起名的话。

麻省理工公开课 - 固态化学导论课程节选

You'd expect him to be sad.

以为他很伤心

耶鲁公开课 - 死亡课程节选

Now they can pretend to be sad, ignored, disrespected New England dubious Vegas favorites against the planet.

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It's going to be sad when I have to leave but there comes a time where you say no, enough is enough.

NPR: Local Election Officials Oppose Paper Ballots

"There's no doubt it's going to be sad, because you're not going to see him put the uniform on anymore after this season, " Pettitte said.

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