见补充—When was it that you got to know Jack?—Let me see.Maybe it was in the 1990s_____we were in primary school.A that B which C when D since 我一开始以为是强调句,就选了A,但答案是C.是按什么选的?是时间状语从句还

见补充—When was it that you got to know Jack?—Let me see.Maybe it was in the 1990s_____we were in primary school.A that B which C when D since 我一开始以为是强调句,就选了A,但答案是C.是按什么选的?是时间状语从句还
见补充
—When was it that you got to know Jack?
—Let me see.Maybe it was in the 1990s_____we were in primary school.
A that B which C when D since
我一开始以为是强调句,就选了A,但答案是C.是按什么选的?是时间状语从句还是定语从句?还有,强调句和（时间）状语从句怎么区分?

见补充—When was it that you got to know Jack?—Let me see.Maybe it was in the 1990s_____we were in primary school.A that B which C when D since 我一开始以为是强调句,就选了A,但答案是C.是按什么选的?是时间状语从句还
不懂的别乱说
首先问句中强调句重点问时间
答句中要回答when 答案用when 不是强调句,是定语从句,解释先行词 in the 1990s
单独第二句可以填that看做强调句,但意思是 就是在20世纪90年代我们在在小学. 答案是 就是在20-90年代,当时我们在在小学. 填that答非所问.犹如
where was it that you found your bag? 你到底在哪找到你的包的?
it was in the room where i lived last night.在我昨天住的房间里
it was in the room that i lived last night 昨天晚上我就是住的那房间

是c
因为_____we were in primary school是1990s的定语从句，同时后面的这个从句不缺少成分，所以用when

it was 1990s就用that
it was in the 1990s就用when
语感做出来的 呵呵 貌似是某年高考题 我曾见过
一般来说 具体点的用when 大概的时间用that
这个句子里面其实有呼应的 问句里面有when
很多句子没有那么多为什么 做多了 就有感觉了

强调句与状语从句的比较
◎状语从句句首的It本身就是句子的主语；而强调句首的It不作任何成分也没有实际意义。
◎状语从句的连接副词that及句子前面的It be不能去掉。
◎状语从句的引导词可以是when / where，而强调句型中的that不能用其他词代替。如：
(1) It is such an interesting book that we all lik...

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强调句与状语从句的比较
◎状语从句句首的It本身就是句子的主语；而强调句首的It不作任何成分也没有实际意义。
◎状语从句的连接副词that及句子前面的It be不能去掉。
◎状语从句的引导词可以是when / where，而强调句型中的that不能用其他词代替。如：
(1) It is such an interesting book that we all like it very much. 它是一本如此有趣的书，我们大家都非常喜欢。(结果状语主从复合句)
It is such an interesting book that we all like very much. 我们大家都非常喜欢的就是一本如此有趣的书。(强调such an interesting book)
(比较：It is such an interesting book as we all like very much. 这就是我们大家都非常喜欢的如此有趣的书。定语从句)
(2) It was already morning when he woke up. 当他醒来时，已经是早晨了。(时间主从复合句)
It was the next morning that he woke up. 就在第二天早晨他醒来了。(强调the next morning)

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答案显然是C啊。因为是题翻译过来就是“让我想一想，或许是在20世纪就是年代，当我们在初中的时候认识的。”这是一个时间状语从句。而不是定语从句，定语从句必须有先行词，而后面的内容是解释的，可是后头的我们在初中的时候并不是用来解释1990S的，而强调句是it is/was......that的形式去掉这个之后句子明显还可以构成一个完整的句子，题中显然不符合这个条件，所以就只能选C了。...

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答案显然是C啊。因为是题翻译过来就是“让我想一想，或许是在20世纪就是年代，当我们在初中的时候认识的。”这是一个时间状语从句。而不是定语从句，定语从句必须有先行词，而后面的内容是解释的，可是后头的我们在初中的时候并不是用来解释1990S的，而强调句是it is/was......that的形式去掉这个之后句子明显还可以构成一个完整的句子，题中显然不符合这个条件，所以就只能选C了。

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—Let me see.Maybe it was in the 1990s__C___we were in primary school.这句后面省略了that I got to know Jack.要找出强调部分，这道题强调时间，所以表示时间的部分是一体的，用when。
平时做这类题还要靠语感。

强调时间用when，强调句中可以用when的