1. 句型转换。

1. （1） Why don't you go swimming?(改为同义句)

      swimming?

3. （2） David has sent the DVD to his friends. (改为一般疑问句)

    David  the DVD to his friends?  

5. （3） I think we agree with you. (改为否定句)

   I   we  with you.

7. （4） There is a lesson. (改为一般疑问句)

     a lesson?

9. （5） Tom is handsome. (对划线部分提问)

    does Tom  ?