the first time 后的时态要求?

the first time 后的时态要求? the first time 后接的时态 this is the first time 后加什么时态 It is（was） the first time后的从句只能用完成时态吗? There is a time when 和it is the first time后的句子是用什么时态? it is the first time和it was the first time后面接的时态各是什么? It's the first time ,for the first time ,the first time ,at first 区别?哪个后面加过去时态 This my first time that 后接的句子是什么时态? this is the first time 后加什么时态 以及其他这类的词的用法拜托各位了 3Q the first time和 for the first time分别用什么时态? it is the first time应该加什么时态? the first time 引导的时间状语从句有时态限制吗?如,the first time she was walking the dog对不? by the time后加什么时态 请问：1,the first time 是不是可以是连词；2,it is the first time 是不是要用完成时；3,3,这是我第二/三……次做某事,这个句型里面的时态是用完成时吗? 请问：1,the first time 是不是可以是连词；2,it is the first time 是不是要用完成时；3,3,这是我第二/三……次做某事,这个句型里面的时态是用完成时吗? 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 for the first time,the first time的区别 for the first time与the first time的区别