should be 虚拟用法

问题描述:

should be 虚拟用法
像有一句话,ETD时间应该是昨天,却在今天收到,这句话应该是使用虚拟语气吧.那该怎么用呢.the ETD should have been yestoday.

ETD时间应该是昨天
Yesterday should have been the ETD day.
又比如:
我应该去年毕业.
I should have graduated last year.