I am having a class.I will call you back.

I am having a class.I will call you back. have class 为什么class前不加冠词?例如:I am having class.既没有,a,也没the. I am having a music class now.(用tomorrow改写句子) i am having a hard i am having English class 改为一般疑问句 I am hving class 和 I am having classes 有什么区别? I am having a party for “I am having a wonderful time here. I am a student in class 1 括号部分提问 We are having (Chinese class) now.I am going to (Beijing) next year. 括号部分提问 We are having (Chinese class) now.I am going to (Beijing) next year. i am having a surprise party for lana on Friday night中为什么是am having? I am( ) Class Tow. 英汉单项选择：What class are you in?A:I am in class one.B:I am in Class One. I am having a birthday party ( ) ( ) you come? I am having a science lessson (对画线部分提问 i,having,am,picnic,with,a ,friends,my(.) Excuse,I am having a baby here!翻译.