2016--2017学年人教版选修七 Unit 2 Robots Learning about language课件(23张)
2016--2017学年人教版选修七 Unit 2 Robots Learning about language课件(23张)第3页

 Though the structure seems like a passive sentence, it is not. A passive sentence indicates a passive action while this sentence describes a situation when someone has the feeling of alarm. “alarmed” is an adjective formed by V + ed.

Key!