be on the night shift meaning in Chinese

• 上晚班
• 上夜班

• night shift:    夜班(时间)；〔集合词〕夜班工人。
• day (night) shift:    白(夜)班
• night shift nurses:    夜勤病栋

Examples

1. 1 i am on the night shift every wednesday
   我每逢星期三都值夜班
2. She promised to see after the children when their mother were on the night shift
   她答应在孩子们的妈妈上夜班时照顾这些孩子。
3. She promised to see after the children when their mothers were on the night shift
   她答应在孩子们的妈妈上夜班时照顾这些孩子。