It(This) is/was the first(second,third……) time that sb.have/

来源：学生作业帮编辑：作业帮分类：综合作业时间：2024/05/04 08:43:57

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?

因为在你说这是我第一次（干什么）的时候,你是正在或者是已经做了某事,所以后面完成时态.比如：
这是我第一次骑马：this is the first time that i have ridden a horse.
但是如果你写成：this is the first time that i ride (am ridding) a horse.你会让人觉得你说这句话的时候你还是骑在马背上.
那时我第一次骑马it was the first time that i had ridden a hose.（你已经骑过马了）.
如果你要说那将会是你第一次骑马,it will be the first time that i ride a horse (你还没有骑过马）.

It(This) is/was the first(second,third……) time that sb.have/ It is /was for the first /second ...time that sb.do /did sth This/It is the first/second … (序数词) time + that 从句属于什么从句? it is the first/second.time that+现在完成时 It is the third time that you have been late for work this w it is the third time that you have been late this month是强调句型 it is the third time that you have been late this month 什么从句 It is first time that sb.have done sth. it"s the first time that sb have done sth This/It is the first/second time＋that从句,that从句谓语为什么要用现在完成时 It is the first time that sb do sth. It is/was the first/second time that 这一句型中引导的是什么从句可以省吗