3 sentences

1. 他并非有心冒犯你，请别介意。

   tā bìng fēi yǒu​xīn mào​fàn nǐ, qǐng bié jiè​yì.

   He didn't mean to offend you, so please don't mind.

   Source: Dong Chinese Dictionary

2. 你还记得我的生日，真是有心。

   nǐ hái jì​de wǒ de shēng​rì, zhēn shì yǒu​xīn.

   It was very thoughtful of you to remember my birthday.

   Source: Dong Chinese Dictionary

3. 如果你有心学习，什么时候都不晚。

   rú​guǒ nǐ yǒu​xīn xué​xí, shén​me shí​hou dōu bù wǎn.

   If you are determined to learn, it is never too late.

   Source: Dong Chinese Dictionary