a fake doctor的用法和样例：
- I looked in the glass and saw myself looking like a fake doctor with a beard.
- I've been done! The antique is a fake.
- The salesman cheated me into buying a fake.
- He looked like a postman but he was really a fake.
- On closer examination the painting was proved to be a fake.
- That's not a real diamond necklace, it's just a fake!