当父母作为英语伴读时，写作文可以围绕以下几个方面展开：

描述父母的特点

可以描述父母的外貌特征、性格特点以及他们对你学习生活的关心和支持。例如：“My mother is a doctor. Her English name is Amy. She is thirty-five years old. She is very nice. She has a long hair and two black eyes. And she has a small mouth and a small nose.”

表达感谢和感激

表达对父母养育之恩的感激之情。例如：“Since we were born, many people help us a lot. We should be grateful to their kindness.”

讨论陪读的利弊

可以分析父母陪读的优势和劣势，以及这些影响对你的学习和生活产生的具体影响。例如：“There are many discussions about whether it is good or not for students to rent outside and study along with parents. There are advantages and disadvantages to this.”

分享个人经历

结合自己的亲身经历，讲述父母陪伴学习的经历和感受。例如：“I have a busy father and a kind mother. They always support me in my studies and life.”

提出建议

如果可能，可以提出一些建议，表达对父母陪伴学习的期望。例如：“I think it's important for parents to find a balance between their work and their role as English companions. They should encourage us to be independent while also providing necessary support.”

通过以上几个方面的内容，可以构成一篇结构清晰、内容充实的英语作文，既表达了个人情感，又提供了有价值的观点和建议。