1. 句型转换

1. （1） I bought this pet dog two months ago．(同义句转换)

     I  this pet dog two months．

3. （2） Why don't you buy a present for your mother?(同义句转换)

          a present for your mother?

5. （3） Tom has learned Chinese for two years．(对划线部分提问)

         has Tom learned Chinese?

7. （4） He got exercise by running ． (对划线部分提问)

       he get exercise?

9. （5） He has been a teacher in our school since last year．(改为一般疑问句)

      he  a teacher in our school since last year'?