6 sentences

1. 他性格孤僻，不太合群。

   tā xìng​gé gū​pì, bù tài hé​qún.

   He is solitary and doesn't fit in very well with others.

   Source: Dong Chinese Dictionary

2. 此人性格孤僻，平时话极寡。

   cǐ rén xìng​gé gū​pì, píng​shí huà jí guǎ.

   This person is unsociable and usually speaks very little.

   Source: Dong Chinese Dictionary

3. 他性格孤僻，很少与外界接触。

   tā xìng​gé gū​pì, hěn shǎo yǔ wài​jiè jiē​chù.

   He has a reclusive character and rarely interacts with the outside world.

   Source: Dong Chinese Dictionary

4. 他生性孤僻，过着十分清寂的生活。

   tā shēng​xìng gū​pì, guò zhe shí​fēn qīng jì de shēng​huó.

   He is unsociable by nature and lives a very quiet and solitary life.

   Source: Dong Chinese Dictionary

5. 他性格孤僻，总是游离于集体之外。

   tā xìng​gé gū​pì, zǒng​shì yóu​lí yú jí​tǐ zhī​wài.

   He has a solitary personality and always keeps himself detached from the group.

   Source: Dong Chinese Dictionary

6. 由于性格孤僻，他在那里遭到了同事们的冷遇。

   yóu​yú xìng​gé gū​pì, tā zài nà​li zāo​dào le tóng​shì men de lěng​yù.

   Due to his withdrawn personality, he was treated coldly by his colleagues there.

   Source: Dong Chinese Dictionary