It's the first time I have been to the US,______

问题描述:

It's the first time I have been to the US,______
改反意疑问句,我觉得应该是 isn't it
但答案是haven't I,
到底哪个对呢?
规则里是说要根据主句来改反意疑问句的,网上有好几个例子,把句子里的I've换成She has,后面是isn't it,这个肯定是对的,但改成I have 之后是否情况不同了呢?
大家没有明白我的意思,看下面我找到的规则:
当陈述部分是It (This,That或其他表示时间的名词+ be+the+first time(month 等)+that 从句(that 可省)时,疑问部分与主句的主语和谓语保持一致 .如:This is the third time he has left home,isn't it?Tomorrow will be the second time that I have had to have my TV set repaired again,won't it?

这句话看成2部分
1是It's the first time
2是I have been to the US
第2部分是主要的 所以是haven't I.
找到主要部分才是关键
可能说得太白了 你听得懂