着急可以用“be anxious”、“be worried”、“be in a hurry”等表达。例如，“I am anxious about the exam tomorrow.”（我对明天的考试感到着急。）“She is worried about her son's safety.”（她对儿子的安全感到着急。）“We are in a hurry to catch the train.”（我们着急赶火车。）此外，还可以使用一些口语化的表达，如“freak out”、“lose it”等。例如，“Don't freak out, we still have time.”（不要着急，我们还有时间。）“She lost it when she realized she lost her phone.”（她发现手机丢了后就着急起来。）