在英语考研复试中，如果出现对不起的情况，可以尝试以下几种表达方式：
未听清或未听懂问题时
I'm sorry, I didn't hear that clearly. May I ask you to repeat it, please？
再次未听懂问题时
I'm afraid that I'm not quite familiar with this topic, but from my point of view [关键词] + [相关内容]......
一时语塞或来不及思考时
It's something like..... I mean....... As you know,...... To be honest,...... Let me see,......
口语表述出现错误时
I mean...... That is to say...... In other words......
老师未理解回答（或理解有误）
Would you please clarify what you mean by that？ I want to make sure I understand your question correctly.
这些表达方式可以帮助你在复试中更加礼貌、自信地应对可能出现的失误或理解障碍。记住，复试不仅是考察你的英语水平，更是考察你的沟通能力和应变能力。保持冷静和礼貌，展示出你的专业素养和积极态度。