at class 和at the class区别

at class 和at the class区别 at class 和in class中文意思 at the class end和at the end of class可以相互替换吗? at the class还是in the class还有是in class还是at class.晕了. classes begin at ...和class begins at ...它们有什么区别? The frist class begin at eight O' The first class ( )at 8:00 am The first class in morning at twenty the first class begins at的意思 Class begins at?是什么意思? Class _____ at eight in the class ,on the class 与at the class 分别是什么意思 ?