句型转换 
（1）My father works on a farm.(变一般疑问句)
____ your father ____ on a farm?
（2）What do you think of the yellow dress?(改成同义句)
____do you____  the yellow dress?
（3）His mother is a nurse.(加doctor构成选择疑问句)
____ his mother a nurse____  a doctor?
（4） It is 9:30 now.(就划线部分提问)
____  is it now?
（5）She doesn't have any pears.(变肯定句)
She ____ pears.
（6）We play volleyball.（改为以Let开头的句子）
____volleyball.
（7）Can I help you?（改成同义句）
What____ I ____  you?