分类：教育/科学-外语学习-英语考试
问题：Infact,traditionally,inChina,peo? 
 In fact,tradionally,in China,people only used to pay the doctor while they wew well and they used to go to their doctor while they were well and they used to go to their doctor fairly regularly on,you know, maybe four or five times a year,and they would only pay the docto In fact,tradionally,in China,people only used to pay the doctor while they wew well and they used to go to their doctor while they were well and they used to go to their doctor fairly regularly on,you know, maybe four or five times a year,and they would only pay the doctor when they wee kept well我知道这个on是修饰four or five times a year 但是我想问如果这句没有on直接就是four or five times a year说得通吗 有区别吗
回答：这里本来不应该用on的。用了反而是赘词。说它修饰four or five times a year并没有语法上的根据。如果要修饰频率时间，应该用
at，意思是at （the rate of）four or five times a year。那为什么会出现on呢？我觉得这是因为这篇英文是未加编辑的口语英语，是纯自然的语料。平时说话时有时会先说了个词，然后中间插入了些成分，再接上时改口用别的结构了。自然语料就是这样的，充满了书面语没有的口误或改口，严格来说是不合语法的。