科普类纪录片:it's time we were off是什么意思？为何要用were?

It's time we should start it 是什么歌中的歌词 it's time we were off是什么意思？为何要用were? It's lucky that we caught the last train in time变同义句 It's time for It's first time to It's time we___now. 选择题! it's not worth our time It's time to It's time for 区别 It's time to go to school. It's time for lunch翻译 It's time to gut up.能不能换成It's time to wake up.