一道英语选择：As is known to all,the Great Wall finally___in the th

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一道英语选择：As is known to all,the Great Wall finally___in the third century B.C..
A took the shape B took shape C come into being D had taken its shape 为什么选D不选A或B呢?
逗号前用的是一般现在时，怎么逗号后面一下子就跳到过去完成时了？应该是过去式比较好吧。

“长城的成型”是客观事实,所以前面的主语从句部分是一般现在时,逗号后面是对由As引导的主语从句的补充说明,“长城的成型”是在过去发生,finally是一个时间状语,这道题你可以用排除法啊：A选项想要做“the great wall”的定语,但是“took the shape”后面没有接介词,即使有介词,句子成分缺失,所以不行哦,B选项：少了个定冠词,我就不知道什么意思了,不能选,C选项：很显然,时态不对,故选D,原因它形成了完成的主谓宾结构,
再问： take shape的意思是
1. 成型,形成
2. 具体化
3. 体现
4. 有显著发展
为什么不能选呢？逗号前用的是一般现在时，怎么逗号后面一下子就跳到过去完成时了？应该是过去式比较好吧。
再答：你可以这么理AS引导的是主语从句，而真正主句部分是逗号后面的，后面的时态应该是和过去有关的时间，因为他有明显的时间状语“finally”和“in the 3rd century B.C"所以必须要用过去完成时，那两个时间状语就像现在完成时中的”yet“，这样对比来看方便你理解，至于为什么逗号前面的系动词用”is“原因：现在时是相对于过去的时态来说的，众所周知就是指现在人们都知道了，同时也是陈述一个事实，必须用现在时

英语翻译The Great Wall of China is known to people all over the As is known to all, _______ opening ceremony of the 16 th As the Great wall ()all over the world填is known还是was known为什么英语翻译(As is known to all),on the afternoon of May 12th,a frig 一个英语题目单词拼写The Great Wall of China is recognized as one of th The great wall is known( )the world.A.For B. As we all know ____ Great Wall is __longest wall in the worl The Great Wall is _____(wide)known to the whole world. 英语英译中1.As is known to all,China is the largest developing co the great wall is the to longest 分析一道英语复合句_____is known to us all is that the 2008 Olympic Ga as is known to the world,mark twain is a great writer