1、He works from dawn till dark.他日以继夜地工作.
2、Will it still rain heavily when i come back from that factory?我从工厂回来时还会下雨吗?
3、Did you water the flowers in your garden at three o'ciock this afternoon?你今天下午3点浇花园的花了吗?
4、However late it is.无论多晚,他妈妈都会等他一起吃晚饭.
5、she was just leaving.很不巧,我刚到她住处的时候,她正准备出门,所以我们只说了几句话.
be just doing sth=刚要做某事
（has just left时态不对,just left 和had just left表示“已离去”,句意不通.）