把下列句子改成“被”字句。    
1．西门豹把漳河的水引到田里。
                                                                                                                      
2．我把国旗从旗杆上抽下来，系在脖子上。
                                                                                                                      
3．回到家里，我把这件事告诉了父亲。
                                                                                                                     
4．父亲从我手里夺过戒尺，折成两段，向墙角扔去。
                                                                                                                     
5．村里的人提着斧子砍下山上的树木。
                                                                                                                       
6．瑞士的人们用舒适的空调列车送走了濒临死亡的燕子。