How to Use "impostor" with Example Sentences

1. How are you gonna know this impostor ?
2. He said he was a doctor , but it subsequently emerged that he was an impostor .
3. Meanwhile , it emerged that a man thought to have been the taliban 's second-in-command and flown by nato to kabul for secret negotiations was in fact an impostor .
4. Worse , since mr romney now tries to present himself as an ardent conservative , these policies have allowed the other candidates to denounce him as a flip-flopper and an impostor .
5. This impostor , who could speak french , german and latin , wandered about everywhere preaching without papal authority or the licence of any prelate , falsely claiming that he had received an order from blessed mary , the mother of the lord , to summon shepherds and herdsmen ......