1. 句型转换

1. （1） They are having dinner in the dining hall. (改为否定句)

   They dinner in the dining hall.

3. （2） Betty is enjoying the sun. (改为一般疑问句)

   Betty the sun?

5. （3） His father is waiting for the bus now. (对划线部分提问)

   is his father now?

7. （4） My mother listens to music every day. (用now 改为现在进行时态)

   My mother to music now.

9. （5） Lily often sends me emails. (改为同义句)

   Lily often sends me.