原来是

• turn out that (to be(do))
• turn...out

例句

1. 列车长原来是一位青年妇女。
   The chief conductor turned out to be a young woman.
2. 我祖父给我的那幅画原来是康斯塔伯的作品。
   The painting my grandfather gave me turned out to be a Constable.
3. 前几天的晚上，觉得没了头痛，我想起原来是因为我好久没去过音乐厅了。
   The other evening, feeling rather in want of a headache, I bethought me that I had not been to a music hall for a time.
4. 他原来是个善变的人-他离开我了。
   He turned out to be fickle - he has left me.
5. 汽油短缺的谣传原来是一场虚惊。
   The rumours of a petrol shortage turned out to be a false alarm.