It is the first time that he has been to America,______? 此句的反义疑问句是.

isn't it 一般情况下,主从句复合句构成的句子,反意部分和主句保持一致.如：I told that you should not do that again,didn't i 不过,如果主句是这样的；I thing / hope / believe / imagine that.反意部分就要和从...