4 sentences

1. 她有一段神秘的往事。

   tā yǒu yī duàn shén​mì de wǎng​shì.

   She has a mysterious past.

   Source: CCMatrix

2. 她童年的往事涌上心头。

   tā tóng​nián de wǎng​shì yǒng shàng xīn​tóu.

   Memories of her childhood came flooding back.

   Source: AI Challenger 2017

3. 谢谢你告诉我你的往事。

   xiè​xie nǐ gào​sù wǒ nǐ de wǎng​shì.

   Thank you for telling me about your past.

   Source: CCMatrix

4. 回首往事，她说她不会改变任何事情。

   huí​shǒu wǎng​shì, tā shuō tā bù​huì gǎi​biàn rèn​hé shì​qing.

   Looking back, she said she would not change a thing.

   Source: CCMatrix