星级典句:
第一句: Could you tell me how to take this medicine?
告诉我怎样服用这种药，好吗？
A: Doctor, could you tell me how to take this medicine?
医生，请告诉我怎样服用这种药，好吗？
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.
当然，以你的病情来看，我建议你这种药一天吃三次，一次一片。这瓶止咳糖浆每隔2小时喝五毫升。

第二句: What's this for?
这是治什么的？
A: Doctor, what's this for? Can you tell me?
医生，能告诉我这是治什么病的吗？
B: This is for reducing the fever.
这是退烧的。

其他表达法:
How should I take these?
这些药应该怎样服用？
How many times a day should I take this medicine?
这个药一天吃几次？
Which one is the pain-killer?
哪一个是止痛药？