准备考研用英语可以表达为：
1. Preparing for the postgraduate English exam
2. Studying for the postgraduate English exam
3. I am ready for the entry examinations of postgraduate
4. I have several friends who were also preparing for the entrance exam
5. I would take part in the entrance exams for postgraduate schools
这些短语都能准确地表达准备考研的英语表达方式，可以根据具体语境选择合适的短语。