如果病太重，你就得住院。

Rúguǒ bìng tài zhòng, nǐ jiù děi zhùyuàn.

If the illness is too serious, then you have to be hospitalized.

她住院的时候，朋友给她送了很多水果。

Tā zhùyuàn de shíhou, péngyou gěi tā sòng le hěn duō shuǐguǒ.

When she was in the hospital, her friends brought her a lot of fruit.

医生说他要住院三天。

Yīshēng shuō tā yào zhùyuàn sān tiān.

The doctor said he needs to stay in the hospital for three days.