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