考研的英语表达是 Take part in the entrance exams for postgraduate schools。在回答有关考研的问题时，你可以使用这个短语来描述你正在准备或参加的活动。例如：
1. I am currently preparing for the entrance exams for postgraduate schools.
2. She has already taken part in the entrance exams for postgraduate schools and is waiting for the results.
希望这些信息对你有所帮助。