在 + 医院 + Verb
The noun 医院 (yīyuàn) means "hospital" and refers to a medical facility where patients receive diagnosis and treatment. It is commonly used with 在 to describe being at or going to the hospital.
她生病了,我们送她去医院吧。
Tā shēngbìng le, wǒmen sòng tā qù yīyuàn ba.
She's sick; let's take her to the hospital.
这家医院的医生水平很高。
Zhè jiā yīyuàn de yīshēng shuǐpíng hěn gāo.
The doctors at this hospital are very skilled.
他在医院住了一个星期才出院。
Tā zài yīyuàn zhù le yī ge xīngqī cái chūyuàn.
He stayed in the hospital for a week before being discharged.