I should not eat anything oily.  我不能吃任何油腻的东西。

Is it harmful to your health? 对你的健康有害吗？

The doctor says that I need an operation. 医生说我需要动手术。

When will you have the operation? 什么时候手术？

I'm not sure. The doctor says I need a thorough examination before the operation. 我不清楚。医生说手术前要先做仔细检查。

When will I be released? 我什么时候才能出院?

Doctor, do you think I'm better today? 医生，您看我今天好些了吗？

Yes. Much better. 是的。好多了。

When will I be released? 我什么时候才能出院？

Not until next week. 要到下个星期。