I have art lesson on the afternoon of Tuesday.为什么用on?为什么使用on不用at呢?

I have an Art lesson on Monday 改一般疑问句 I have an art lesson TuesdaI have an art lesson Tuesday morningA.in B.on C.about I have an art lesson on Monday.对划线部分提问(划线部分是Monday) We have art lesson on monday and thursday的同义句是We have art lesson (.)(.)(. I have art lesson on the afternoon of Tuesday.为什么用on?为什么使用on不用at呢? I'm going to have an art lesson.怎么翻译. I'm going to have an art lesson.的中文翻译 I am going to have an art lesson.怎么读 i have ____(have) art on monday. I have art on Monday.(写问句) I ____(have) art on monday. How long does Victor have an art lesson on monday?怎么回答 have an Art Lesson(中文） have I art lesson an for hours two that after 连词成句 i have an art lesson ——two hours用适当介词填空 连词成句 an,I,for,art,have,lesson,an,hour 请标出下列句中重读的单词 I have an art lesson for two hours I always have art i( ) on saturday（初一上学期的）I always have art I( ) on saturday