学生疑问：The key partnerships we build with software developers around the world are central not only to the success of Windows but also to realize the possibility that PC technology provides.结构如何分析。

老师解答：the key partnerships主语，we build with software developers around the world主语的定语从句，are central to 谓语

分析点评：长难句是英语考试复习中一个重要环节，要理解长难句就必须对句子结构非常清晰中，这就要求我们对主句、从句以及各种修饰成分要很清楚，此句中修饰主语的定语从句we build with software…前省略和that导致学生对句子结构不理解。