It was about 600 years ago____the first clock with a face and an hour hand was made.

该题为强调句 所以应填 that.


我是这么判断强调句的：去掉强调句结构 It + be+ .+that +.,句子结构仍完整（强调句就像马甲一样,脱了之后,里面的衣服仍然完整）只能填that 吗？是的“It is/was + 被强调部分 + that/who + 句子其他部分”是强调句型。除了谓语动词不能强调外，句子中其它成分都可以用该句型加以强调。 被强调的主语是人时，可用it is/was ... that/ who ...，但如果被强调的部分既包括人又包括物，只能用that。那么……强调句该如何翻译呢？举个例子好吗？对比一下It was 600 years ago__when__the first clock with a face and an hour hand was made.when引导的是定语从句再如 It was in the factory that I worked.-------------去掉强调结构：i worked in the factory 。It was the factory （where） i worked.-----------定语从句： 去掉强调结构i worked the factory无论是强调还是非强调都按照非强调来翻译？只不过语气更重？是的 ，很对