in the hospital和at the hospital有什麼不同？

在美式英文裡，in the hospital通常是指「住院」

而at the hospital則是指在醫院裡做其他的事，如工作

比如：

Janet is in the hospital.
(珍娜生病住院中。)

Frank visited Janet in the hospital.
(法蘭克去醫院探望珍娜。) (註：珍娜住院)

I saw Eric at the hospital yesterday. I wonder what he was doing there.
(我昨天在醫院看到艾瑞克。不知道他在那裡做什麼。) (註：艾瑞克沒有住院)

My sister works at a/the hospital.
(我妹在醫院工作。)
(註：如果當地只有一間醫院，用冠詞the；反之則用a)

A: Where is your mom?
B: She’s in the hospital.
A: Is she alright?
B: She had a heart attack the other day. She’s still in ICU.
(她前幾天心臟病發作，現在還在加護病房。)

不過go to the hospital則和當地有幾間醫院無關，只是一種表達方式

表示去醫院看醫生

比如：

She had a bad stomachache and had to go to the hospital.
(她肚子痛到必須去醫院看醫生。)

不過在英式英文裡，「住院」會說in hospital，不加冠詞

在醫院工作則會用in/at a/the hospital

加冠詞a或the，兩者的差別同前述

比如：

Jacob has been in hospital for two weeks.
(雅各已經住院兩周了。)

Working in/at a hospital is usually tiring.
(在醫院工作通常很累人。)