4 sentences

1. 事故发生在一个雨天。

   shì​gù fā​shēng zài yī​ge yǔ​tiān.

   The accident happened on a rainy day.

   Source: Tatoeba

2. 我去采访这个人的时候，是个雨天。

   wǒ qù cǎi​fǎng zhè​ge rén de shí​hou, shì ge yǔ​tiān.

   When I went to interview this person, it was a rainy day.

   Source: CCMatrix

3. 我们在那里度过了多少雨天的下午？

   wǒ​men zài nà​li dù​guò le duō​shao yǔ​tiān de xià​wǔ?

   How many rainy afternoons did we spend there?

   Source: AI Challenger 2017

4. 尽管雨天时道路成了泥河，这座屋子内部的地板一尘不染。

   jǐn​guǎn yǔ​tiān shí dào​lù chéng le ní hé, zhè zuò wū​zi nèi​bù de dì​bǎn yī​chén​bù​rǎn.

   Though the streets become rivers of mud when it rains, the floors inside this house were spotless.

   Source: CCMatrix