句子训练营。

1．微风吹拂着千万条才展开带黄色的嫩叶的柳丝。

     缩句：                                                                                                             

2．这就是美丽的珍珠泉。

     改为反问句：                                                                                                 

3．荷花挤满了池塘。

     改为“把”字句：                                                                                          

     改为“被”字句：                                                                                         

志愿服务理念、精神和原则是什么？