3 sentences

1. 下雨了，于是我们取消了野餐。

   xià​yǔ le, yú​shì wǒ​men qǔ​xiāo le yě​cān.

   It started to rain, so we canceled the picnic.

   Source: Dong Chinese Dictionary

2. 他感到心里一阵阵作痛，于是决定去医院检查。

   tā gǎn​dào xīn​li yī zhèn zhèn zuò​tòng, yú​shì jué​dìng qù yī​yuàn jiǎn​chá.

   He felt recurring pain in his chest, so he decided to go to the hospital for a check-up.

   Source: Dong Chinese Dictionary

3. 我真的很喜欢她，于是我邀请她到我下榻的酒店套房。

   wǒ zhēn​de hěn xǐ​huan tā, yú​shì wǒ yāo​qǐng tā dào wǒ xià​tà de jiǔ​diàn tào​fáng.

   I really liked her, so I invited her up to my hotel suite.

   Source: OpenSubtitles