This is the first time that I have been abroadthe first/second/third time 后面跟的定语从句,时态为什么用完成时

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• It(This) is/was the first(second,third……) time that sb.have/had done sth.从句中的时态为什么必须用完成时?
• 问几道英语语法题（1）.-----the wind?It ------very strongly.A.Are you hearing;is blowing B.Do you hear;is blowing C.Have you heard;has blown D.Do you hear;is blown但我想知道C为什么不行.hear这个行为不是发生在说话之前吗,为什么用do提问呢?（2）.Your phone number again?I ------quite catch it.A.didn't B.couldn't C.don't D.can't但B为什么不行（3）我看到有一本语法书对过去完成时用法中的一条的解释是：“表示在过去的某一时间或动作做之前已经完成了的动作（即过去的过去）.过去完成时主要用在宾语从句和状语从句.”难道过去完成时不能做主句吗?（4）现在完成时有一种典型结构是：This/It+is/will be+the first(second...)time that...我想知道
• 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?
• This is the first time that I have been abroadthe first/second/third time 后面跟的定语从句,时态为什么用完成时
• It(This) is/was the first(second,third……) time that sb.have/had done sth.从句中的时态为什么必须用完成时?
• It is the first time that .句型的问题.It is the first / second time…that…还有It was the third time that ...为什么是:It is the first time that I see you.It was the first time that I saw you.这个是我照句型写的...It is the first time that I have seen you.It was the first time that I had saw you.为什么不用have 和 had ..这是在百科看到的..1）It is the first / second time….that…结构中的从句部分，用现在完成时。It is the first time that I have visited the city.It was the third time that the boy had been late.没
• 英语翻译this is the first time that your grangpa has been to the America_______?翻译疑问句
• Is this the first time that you have visited our cityno,I remember____here when I was only five years oldA to take B to be taken C taking Dbeing taken