把下面的内容翻译为英文：混合式教学最早由何克抗2004提出来他把混合式学习定义为要把传统学习方式的优势和网络化学习的优势结合起来也就是说既要发挥教师引导、启发、监控教学过程的主导作用又要充分体现学生作为学习过程主体的主动性、积极性与创造性。而黄荣怀2009提出混合式学习可以视为一种基于网络环境发展起来的新兴教学策略。胡杰辉2021把混合式学习框架划分为时间和空间两个维度空间维度包括线上线下时间维度

Blended learning was first proposed by He Kekang (2004). He defined blended learning as the integration of the advantages of traditional learning methods and online learning. In other words, it aims to combine the guiding, inspiring, and monitoring role of teachers with the initiative, enthusiasm, and creativity of students as the main participants in the learning process. Huang Ronghuai (2009) proposed that blended learning can be seen as an emerging teaching strategy developed in a networked environment. Hu Jiehui (2021) divides the framework of blended learning into two dimensions: time and space. The spatial dimension includes online and offline, while the time dimension includes synchronous and asynchronous communication between teachers and students or among students. In summary, blended learning is a combination of online and offline learning methods, including blended learning based on MOOCs, blended learning based on SPOC (Small Private Online Courses), and blended learning based on flipped classrooms, among others