3 sentences

1. 他特地登门谢罪。

   tā tè​dì dēng​mén xiè​zuì.

   He made a special visit to apologize for his offense.

   Source: Dong Chinese Dictionary

2. 为了表达歉意，他特地登门谢罪。

   wèi​le biǎo​dá qiàn​yì, tā tè​dì dēng​mén xiè​zuì.

   To express his apologies, he made a special visit to their home to apologize in person.

   Source: Dong Chinese Dictionary

3. 请问您这次登门拜访，有何贵干？

   qǐng​wèn nín zhè cì dēng​mén bài​fǎng, yǒu hé guì​gàn?

   May I ask what brings you here today?

   Source: Dong Chinese Dictionary