如何用英语安慰不快乐的人？

Don't worry (about it). 别担心。

It's okay. 没什么的。

Forget (about) it. 别放在心上。

What bad luck！太遗憾了！Better luck next time! 下次一定会走运的!That's all right. 没事儿。

Don't blame yourself. 别责备自己了。

It's not your fault. 这不是你的错。

Don't worry, it happens. 别担心了，那是常有的事。

It happens to the best of us. / It happens to everyone. 这种事谁都会遇到。

There's no need to worry about it. 不必为那事烦恼。

Don't concern yourself. 别想得太多。

It's no big deal. 没什么大不了的。

I've seen worse. 这还算好的呢。

It could have been worse. 还有比这更糟的呢。

It might have been worse. 也许有的比这更糟呢。

Don't feel so bad about yourself. 别那么难过了。

Don't be so hard on yourself. 不要对自己太苛刻了。

Don't be so down on yourself. 不要再那么闷闷不乐了。

Don't think so lowly of yourself. 别那么自暴自弃了。

It'll work out. / Things will work out. 总会有办法的。

Everything will be fine. 一切都会顺利的。

一开头当然是问问人家肿么了，为啥不开心之类的。

当然大多数人也没什么天塌下来的事。

下面是正题了。

（我不太会安慰人，也就是叫人家多喝热水的水平。

）You know shit happens. Life can't be always cheerful. But that's alright. You can get over it finally. And what's more important, you've got me. I'll always be with you whenever you need me. 这样连安慰带撩妹的你看行不?