1. Where shall I register?
我要在哪儿挂号？
还能这样说：
How can I register?
Where is the registration office?
应用解析：
(be) in register 对得齐，配准；
on register 有嫌疑，被怀疑，被注意；
out of register 对得不齐，没有配准；
register as 表现为，显示出
2. Is it for emergency case?
是看急诊吗？
还能这样说：
Do you want to have an emergence treatment?
Are you asking for an emergence case?
应用解析：
a case in point 恰当的例子；
a case of conscience 良心问题；
a case of dog eat dog 残酷的竞争；
a gone case 无可救药的事
3. Please queue up to register.
请排队挂号。
还能这样说：
Please wait on line to register.
Please line up for register.
应用解析：
jump the queue 插队，不按顺序排队等候；企图抢先获得某种东西；
queue up for 排队等候
4. I think you should see a physician first.
我想你应当先看内科大夫。
还能这样说：
I suggest you register with medical department.
You had better see the physician in the first instance.
应用解析：
at first 首先，最初；
be the first to (do) 最先……的；
come in first 获第一名；
from first to last 自始至终；一直；
from the first 从头，自始