题目内容：

用英语说今天明天昨天是星期几怎么说?
有哪几种,各是什么?（问语答语都要）

优质解答

---What day is it today?
---It is Sunday (today).
---What day was it yesterday?
---It was Saturday (yesterday).
---What day is it tomorrow?
---It is Monday (tomorrow).