请问it is time for/to 可以用在表示虚拟语气中吗?怎么译

It is time for/to ...不可以用在虚拟语气中.比如：It's time for me to have a rest./ It's time to have lunch.这两个句子都不是虚拟语气.It is time that I went/should go to school to pick up my son.这个句型...