Question

it 做形式主语引导的主语从句和强调句型的区别

比如

Tom thought he must have sen a strange insect ,but it was the goat's eyes ___ he had seen in darkness.

A.which B.that C.what D.when

这题选什么、

but it was the goat's eyes ___ he had seen in darkness.
这是个强调句型吗？我为什么看不出来它和it 做形式主语引导的主语从句有什么区别。

it 做形式主语引导的主语从句和强调句型怎么区分啊。
说明一下为什么不选B？？

Answer 1

我觉得是 B
it was 。。。that是强调句型
强调句型时，通常指的是："It be…that…"这一 结构（简称It-type强调句）。
例如：
It is not only blind men who make such stupid mistakes. 决不只是盲人才犯这样愚蠢的错误。
It was the goat's eyes that he had seen in the darkness. 他在黑暗中看到的就是这只山羊的眼睛。
It-type强调句的特征是：如果我们把"It be…that…"从句中划去，所剩 的正好是一个完整的句子。例如 上面第一句经过处理后就成了：
Not onlt blind men make such stupid mistakes.
它的意思仍然是完整的，只是强调意味已经失去。实际上"It be…that…" 只不过是一个框架而已，它的各 部份在句子中均不担任成份。
It-type强调句通常可用来强调句子的主语、宾语、状语。
一 . 注意强调句型的结构
“ It is /was + 被强调部分 + who/ that + 其它部分”，此结构常译为“是……；……正是”。其特点是：去掉强调结构“ It is / was … who / that… ”或经过语序调整后，原句仍成立。如：
It was about 600 years ago that the first clock with a face and an hour hand was made.
如果把 It was… that 去掉后，句意仍完整，不缺任何成分，即原句仍成立。
二 . 注意谓语动词的人称和数与所强调的主语的一致性
在强调句型中，当强调主语时，其后的谓语动词应和被强调成分的人称和数保持一致。如：
It is the ability to do the job that matters not where you come from or what you are.
强调的主语 the ability to do the job 是单数，因此谓语动词 matter 也应用相应的单数形式 matters 。
三 . 注意 who 和 that 的选用
在强调句型中，若被强调部分是主语，且指人时，可用 who 代替 that ；若被强调部分是宾语，且指人时，可用 whom 代替 that ；但若被强调部分是状语时，则只能用 that ，即使指时间、地点、原因等，也不能用 when ， where 或 because 等替代。如：
It was my sister whom I met in the street yesterday.
It was only when I reread his poems recently that I began to appreciate their beauty.
It was for this reason that her uncle moved out of New York and settled down in a small village.
四 . 注意该句型一般不强调谓语动词
强调句型通常强调主语、宾语和状语，一般不强调谓语。需强调谓语时，要在谓语动词原形前面加上助动词 do ， does 或 did ，尤其是在祈使句或肯定句中，用来加强语气。如：
Do tell me where on earth you are now!
Boys and girls , let me tell you something that does sound strange.
To my surprise, he did come here on time last night.
五 . 注意区分含有 Not until 的倒装结构和强调结构
Not until 用于句首时，主语和谓语通常用倒装语序。如果是复合句，那么主句用倒装语序。但在“ It is / was not until …. that ”句型中， that 后的主谓不倒装。如：
It was not until she took off her dark glasses that I realized she was a famous film star.
本句是由 I didn't realize she was a famous film star until she took off her dark glasses 变化而来的。命题者有意将状语从句 until she took off her dark glasses 置于 It was … that 这个强调句型中，考查考生的判断能力。此句还可用倒装结构来表达。如：
Not until she took off her dark glasses did I realize she was a famous film star.
六 . 注意强调句型与主语从句“ It is /was… that… ”的区别
主语从句中 It is / was 后通常有名词或形容词作表语，而强调句型中 It is/ was 后是对主语、宾语或状语的强调成分。其判别方法是：去掉强调句式结构或经过语序调整后，原句仍成立。这也是强调句型与主语从句及其它句式的重要区别之一。如：
It is a fact that English is being accepted as an international language.
Was it during the Second World War that he died?

看到第一个例句了吗？
好像没有一楼的那种说法，不过我只是个初中生，具体接触这个语法的机会很少

Answer 2

选A，这里which后面引导的那是个定语从句，是来修饰山羊的眼睛的。这个句子也是一个强调句。也就是强调句里面有定语从句。
什么是it做形式主语，是用it来代替后面一个冗长的句子，这个冗长的句子才是真正的主语，例如：It is very important to study hard.真正的主语是 to study hard，用it代替 to study hard

Answer 3

说下自己的想法，已经酝酿很长时间了
首先，这个句子肯定不是强调句，否则的话，翻译上就会有困难，had seen与it was这个句子翻译与时态上的矛盾…
然后，觉得本句子前两项都对，都是定语从句，用两个连接词哪个都行，不过，更偏向于b，感觉用得比较舒服，个人感觉而已…
最后，觉得这题出的不是太严密，毕竟有两个正答，呵呵
还有，一楼回答得很好，虽然没有分析为什么不选第二项，楼主可以离线联系一楼，问一下子，顺便告我一下子…
呵呵…都是自己的一些想法，琢磨了半天，还是打了上去…