the Open Day the 前面加什么介词

the Open Day the 前面加什么介词 Teachers' Day 前面要加 the 是on the open day还是in the open day on the Open Day 意思 the National Day前面加on还是in 为什麼National day前面不用加定冠词the? 英语day前面什麼时候才加the Christmas Day 前要加the吗还有哪些节日前加the,哪些前面不加the 英语作文on the open day The shop is open ______.(day) The supermarket is open every day有动词open还加isThe supermarket is open every day from 9 a.m to 9 p.m 为什么已经有动词open还加is呢? It was sunny and hot all day.为什么all day前面不加the? 在第一天用英语怎么说?the first day 前面用不用加介词?加什么? look,the door is open,为什么open不加ing? open the Open the open the last为什么前面加the?