To be zonked out：

用来形容一个人因为狂欢或太累而精疲力竭或倒头即睡。例如：I didn’t sleep at all on the journey from Beijing to London. When I finally got to the hotel I was zonked out.

Utterly exhausted：

表示非常疲惫。例如：Working late into the night, I felt utterly exhausted. My eyes were heavy, and I struggled to focus.

Done in：

表示筋疲力尽。例如：I'm done in after exams each time.

Be dog-tired：

表示累得像狗一样。例如：I'm dog-tired after a long day of work.

Worn out：

表示疲惫不堪。例如：I'm worn out from all the traveling.

Utterly exhausted：

再次强调非常疲惫。例如：I'm so tired, I can't even think straight.

这些句子都可以用来形容一个人在身体或精神上是极度疲劳的状态。希望这些例子对你有所帮助。