What's the matter with you？= What's the trouble with you？你怎么了？

What should she do？她应该做什么呢？

Should I take my temperature？我应该量一下体温吗？

You should lie down and rest.你应该躺下来休息。

What's the matter？怎么了？

I have a stomachache.我胃痛。

You shouldn't eat so much next time.你下次不应该吃这么多。

He has a sore back.他背疼。

He should lie down and rest.他应该躺下休息。

Do you have a fever？你发烧了吗？

Yes, I do.是的，我发烧了。

No, I don't.不，我没有发烧。

这些句子涵盖了健康问题、建议、以及日常对话中常见的表达。希望这些对你有所帮助。