When the cabin crew is making its periodic

题目

When the cabin crew is making its periodic
checks,the passenger will often have questions
about service,schedules,routes and weather.
这个句子的主句和从句各使用的是什么时态?

答案

从句:When the cabin crew is making its periodic checks
现在进行时,因为是is making
主句:the passenger will often have questions about service,schedules,routes and weather
一般将来时
翻译:当船舱的全体船员正在做定期检查时,乘客将对服务,时间表,航线以及天气情况加以询问.