1. 句型转换

1. （1） Lucy wrote a letter to her aunt yesterday afternoon.(改为否定句)

   Lucy       a letter to her aunt yesterday afternoon.
   

3. （2） The young man got there by train.(对面线部分提问)

          the young man   there?

5. （3） They stayed in Beijing for three days.(对划线部分提问)

         did they  in Beijing?