精疲力尽怎么说用英语

"Exhausted" is a word that can be used to describe feeling physically or mentally drained, or "worn out." You could also say that you are "tired beyond belief" or "completely drained" to convey a similar idea. Here are some example sentences:

"I've been working non-stop all week and I'm completely exhausted."
"I'm so tired that I can barely keep my eyes open."
"I'm feeling exhausted after running that marathon."
"I've been studying for exams for hours and I'm mentally drained."