句型转换 1. We can see many young people. (改为否定句) ____________________________________________________________ 2. He often plays basketball. (改为疑问句) ____________________________________________________________ 3. He looks strong and healthy. (改为否定句) ____________________________________________________________ 4. They are playing football. (对划线部分提问) ____________________________________________________________ 5. The pupil is watching the games. (改为复数) ____________________________________________________________