They have to get up early in the morning.

他们一大早就得起床。

《柯林斯英汉双解大词典》

Some old people get up early in the morning.

一些老人早上早起。

youdao

The rooster woke up early in the morning.

公鸡一大早就醒了。

youdao

They think that a person who gets up early in the morning for work has the best chance of success.

VOA: special.2010.06.13

I wake up early in the morning by 8 o'clock.

我早晨八点起床。

布朗克斯的足球教练 - SpeakingMax英语口语达人

It's really nice to see you all and I appreciate you getting up so early in the morning.

真的很高兴在这见到大家,你们起这么早来上课的确值得表扬

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

And certainly we don't want them to leave any unpleasant surprises for the people who have to get up early in the morning.

NPR: When the Elephants March in Manhattan

That's what happens when you get up early in the morning.

NPR: Surge in Violence Worries Baghdad

We were up early in the morning and out and about at 10am for a team walk, then we had our pre-match meal, which is pasta or rice with chicken - the usual stuff.

BBC: Micah Richards column