4 sentences

1. 他暗恋她很久了，却一直不敢表白。

   tā àn​liàn tā hěn jiǔ le, què yī​zhí bù gǎn biǎo​bái.

   He has had a crush on her for a long time but never dared to confess his feelings.

   Source: Dong Chinese Dictionary

2. 他已经成年了，却依然寄生在父母家里。

   tā yǐ​jīng chéng​nián le, què yī​rán jì​shēng zài fù​mǔ jiā​lǐ.

   He is already an adult, yet he still lives like a parasite at his parents' house.

   Source: Dong Chinese Dictionary

3. 他已经三十岁了，却还没有正经的职业。

   tā yǐ​jīng sān​shí suì le, què hái méi​yǒu zhèng​jīng de zhí yè.

   He is already thirty, but he still doesn't have a steady job.

   Source: Dong Chinese Dictionary

4. 他表面上答应了，却在暗地里阻挠计划的实施。

   tā biǎo​miàn shàng dā​ying le, què zài àn​dì​li zǔ​náo jì​huà de shí​shī.

   He agreed on the surface, but secretly obstructed the implementation of the plan.

   Source: Dong Chinese Dictionary