语法总结
It is said that ...
It is said that if anyone touches the tree... 用被动框架表达“据说”，能把传闻和事实区分开来。
相似句：
- It is said that the village is hundreds of years old.
- It is said that no one can explain the story clearly.
It is only ... that ... 的强调
it is only in recent years that it has gained an evil reputation. 用强调结构把“只是近几年”特别凸显出来。
相似句：
- It was only then that I understood the warning.
- It is only after practice that you notice the difference.
So far 与现在完成时
so far he has refused / so far, not one of them has been struck down 都强调“到目前为止”的结果状态。
相似句：
- So far, nobody has proved the story true.
- The doctor has refused to comment so far.