1. have to 2. cannot but 3. have no choice or option but to 4. can't help it 5. can't avoid 近义词或词组cannot help but | cannot help | have reason to | could not but | can not but | can not help | be compelled to | could not help | fain | be obliged to | on compulsion | upon compulsion 例句与用法1. 警察不得不使用武力驱散人群。 The police had to employ force to break up the crowd. 2. 他为了养家不得不去拼命工作。 He had to work hard for the maintenance of his family. 3. 当我不得不离开时，这个孩子情绪异常激动，忍不住哭了起来。 The boy got very emotional when I had to leave, and started to cry. 4. 他不得不将土地抵押来申请贷款。 He will have to mortgage his land for a loan. 5. 我们不得不采取预防措施。 We had to take preventive measures. 6. 寒冷的冬天，我们不得不穿毛织品。 We have to wear woolen clothes in the cold winter. 7. 他们不得不为了那条消息作出声明。 They have to make a protestation of that news. 8. 她不得不低下头才能穿过低矮的门口。 She had to duck her head to get through the low doorway.
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