近义词: have to必须;不得不;只好Nurses have to wear a uniform.护士必须穿制服。I used to have to wear braces.我以前不得不戴牙箍。I have to clock in by eight.我必须八点前打卡上班。If we have to litigate, we will.如果我们必须提***讼的话,我们会的。They may have to amputate.他们可能不得不施行截肢手术。