4 sentences

1. 他一不小心，把水杯打碎了。

   tā yī​bù​xiǎo​xīn, bǎ shuǐ​bēi dǎ​suì le.

   He accidentally broke the glass.

   Source: Dong Chinese Dictionary

2. 他不小心打翻了桌上的水杯。

   tā bù xiǎo​xīn dǎ​fān le zhuō shàng de shuǐ​bēi.

   He accidentally knocked over the water cup on the table.

   Source: Dong Chinese Dictionary

3. 爷爷把假牙放在水杯里泡着。

   yé​ye bǎ jiǎ​yá fàng zài shuǐ​bēi lǐ pào zhe.

   Grandpa put his dentures in a water glass to soak.

   Source: Dong Chinese Dictionary

4. 他在受害者的水杯里偷偷下药，把对方迷晕了。

   tā zài shòu​hài​zhě de shuǐ​bēi lǐ tōu​tōu xià​yào, bǎ duì​fāng mí​yūn le.

   He secretly drugged the victim's water glass and knocked them out.

   Source: Dong Chinese Dictionary