英语 句子改为被动语态
问题描述：
英语 句子改为被动语态
1.Some people destroy the environment.
2.He doesn's water the flowers every day.
3.Does a large population cause many problems?
4.They clean their dormitory every day.
句子改为被动语态
答
1 The environment's destroyed by some people.
2 The flowers aren't been watered by him everyday.
3 Are there many problems caused by a large population?
4 Their dormitory's cleaned (by them)everyday.