按要求改写句子。
（1） I often go to the park at weekends.(改成一般疑问句)
______ ______ often ______ to the park at weekends?
（2）My uncle usually goes climbing in spring.(对划线部分提问)
_______ _______ _______ uncle usually ________ in spring?
（3）My mother likes playing the piano.(改为否定句)
My mother _______ _______ _______ the piano.