What's the matter with you?
What's the trouble?
What's troubling you?
I have a...
I have a splitting headache. 我头痛欲裂。
I have a stomachache. 我胃痛。
I have an upset stomach. 我胃痛。
I have a toothache. 我牙痛。
I have a fever. 我发烧。
You'd better see a doctor.你最好看医生 。
You'd better take a shot of penicillin.你最好打一针青霉素。
How long have you been like this?这样多久了？
How long has it hurt?疼多久了？
Do you have any difficulty in...?
Do you have any difficulty in lifting your legs?
Be sure to...
Be sure to take a good rest and have some light food.
Be sure to make it short and to the point.
A: What's the matter?
B: Well, I've been feeling ill every since a roadside seafood yesterday. My stomach's still upset and I feel dizzy.
A: I see. Any other trouble?
B: Um, I've got a slight fever.
A: Well, it isn't anything serious, probably just food poisoning. Take a good rest, drink much water and have some light food.
B: Do I need an injection or medicine?
A: Yes, the stomach will take care of itself.
B: That's a relief. Thank you.