第一句: Could you tell me how to take this medicine?
A: Doctor, could you tell me how to take this medicine?
B: Sure, as in your case, I'd like you to take one of these pills three times a day, and the bottle of cough syrup should be taken 5 ml every two hours.
第二句: What's this for?
A: Doctor, what's this for? Can you tell me?
B: This is for reducing the fever.
How should I take these?
How many times a day should I take this medicine?
Which one is the pain-killer?