He made another wonderful discoveryHe made another wonderful discovery,___of great importance to scienceA I think which is B Which I thick is<两种用法有什么不同?请从语法和意思两方面解释〉

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B Which I thick is是which引导的一个非限定性定语从句,修饰discovery。他又有了一个极好的发现,我认为这个发现对科学是很重要的。这句不能用A I think which is,句字有了主语和谓语,如果用这个选项就有了两个主语和谓语。

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which is + .......是很常用的啦~~~好像最常用的是:.....(前面说的话),which is good.......

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连接词后加主语加动词

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B,which引导非限制定语从句

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B是非限制性定语从句A是状语从句 但有逻辑问题 应用 I think that is