we clean the classroom every Friday afternoon.的句子成分

来源：学生作业帮编辑：百度作业网作业帮分类：英语作业时间：2024/06/13 00:36:24

we clean the classroom every Friday afternoon.的句子成分
为什么不能说we clean the classroom in every Friday afternoon
或we clean the classroom on every Friday afternoon
或we clean the classroom at every Friday afternoon
为什么?
时间状语前都不加介词吗？
请举例详细说明

in是特指,是固定的时间或地点,every是泛指,例如,i clean my room every morning,如果用in,就是i clean my roon in the morning,是确定的时间.

we clean the classroom every Friday afternoon.的句子成分 we clean the classroom every friday afternoon翻译 We clean the classroom ( )Friday afternoon. We clean the classroom on Friday afternoon.改为一般疑问句 We __(clean)the classroom this afternoon. please keep the classroom clean的句子成分 we clean our classroom every We cleaned our classroom ___ Friday afternoon. we must clean the classroom every day 同义句 we must clean the classroom every day同义句转换 we have to clean the classroom every day We clean the classroom every day.改为被动语态