考研复试时遇到英文问题不会回答，可以采取以下几种策略：

1. 诚实表达：

如果确实不知道答案，可以诚实地表达：“I'm sorry, I'm not sure about the answer to that question. However, I can talk about related topics that I am familiar with.”

2. 转移话题：

尝试将问题引向自己熟悉的话题：“That's a very interesting question. It reminds me of...（提到一个相关的话题，并展开讨论）”

3. 请求澄清：

如果问题不够清晰，可以请求澄清：“Could you please clarify the question? I'm not quite sure what you mean.”

4. 利用时间：

如果时间允许，可以短暂思考：“Let me think for a moment...（思考片刻后回答）”

5. 结合所学：

尝试将问题与自己的专业知识结合，即使不能直接回答，也能展示自己的知识面和思考能力。

6. 举例说明：

如果无法直接回答，可以用例子来辅助说明：“I don't have a direct answer, but let me give you an example...（举例说明）”

7. 保持自信：

即使回答不上来，也要保持自信和积极的态度，这会给面试官留下良好的印象。

以下是一些常见的英文问题及其可能的回答方式：

What are your strengths and weaknesses?

“My strengths include... However, I acknowledge that I need to improve in...”

Why do you want to study this major?

“I have always been fascinated by... and I believe that studying this major will allow me to...”

Describe a challenging situation you've faced and how you dealt with it.

“In a previous job, I encountered a situation where... I handled it by...”

记住，考研复试不仅是考察你的专业知识，也是考察你的沟通能力、应变能力和综合素质。保持冷静，尽量展示出自己最好的一面。祝您复试顺利！