3. ( as) is known to everybody, the moon travels around the earth once every month
(as) has been announced ,we shall have our final exams next month.
我怎么看不出来是从句呢，怎么看啊，请好好解释一下
參考答案:这两个都是简单句，不是从句吧//
( as) is known to everybody和(as) has been announced 不是个完整的句子，没有主语。真正的主语是后面的 the moon travels around the earth once every month 和we shall have our final exams next month