2 sentences

1. 他大清早就出门去锻炼了。

   tā dà​qīng​zǎo jiù chū​mén qù duàn​liàn le.

   He went out to exercise early in the morning.

   Source: Dong Chinese Dictionary

2. 为了抢到特价门票，他大清早就捷足先登了。

   wèi​le qiǎng​dào tè​jià mén​piào, tā dà​qīng​zǎo jiù jié​zú​xiān​dēng le.

   To snag the discounted tickets, he got an early start and beat everyone else to it.

   Source: Dong Chinese Dictionary