请教GWD1-41

hiddragon

以下是引用enjoy7habits在2004-7-10 19:29:00的发言：

韵率且??lt;I>LES在2004-7-8 17:07:00的发言：

改选B啦。

Leaching, the recovery of copper from the drainage water of mines, as a method of the extraction of minerals, it was well established as early as the eighteenth century, but until about 25 years ago miners did not realize that bacteria take an active part in the process.

1. as a method of the extraction of minerals, it was well established
   －it 多余。
   
2. as a method of the extraction of minerals well established
   
3. was a well-established method of mineral extraction
   与as early as the eighteenth century无法连接。
   
4. was a well-established method of extracting mineral that was
   －that was引导的定语从句修饰对象不明，且that was多余。
   
5. had been a method of mineral extraction, well established
   －完成式分词短语不可做定语修饰名词。

谢谢LSE

个人觉得E 错不在完成式分词做定语(是前一个分句的谓语），而是well established 修饰method/extration改变原意或有歧义。E的过去完成时应该最好。

答案是B，觉得不对。

可能是C吧？

感觉上选E。

首先过去完成时没什么不对。其次well established 可以修饰a method mineral extraction.

请指教！

[此贴子已经被作者于2004-9-17 14:53:30编辑过]

bryan0806

以下是引用enjoy7habits在2004-7-8 16:57:00的发言：

Leaching, the recovery of copper from the drainage water of mines, as a method of the extraction of minerals, it was well established as early as the eighteenth century, but until about 25 years ago miners did not realize that bacteria take an active part in the process.

1. as a method of the extraction of minerals, it was well established


2. as a method of the extraction of minerals well established


3. was a well-established method of mineral extraction


4. was a well-established method of extracting mineral that was


5. had been a method of mineral extraction, well established

答案是B,请指教

我选E  因为时态正确　因为有until 用过去完成时可以清楚表达leaching 这个method 一直到25年前才被理解....这里 理解realize是过去式　所以用过去完成时表达比25年前更早的时间的时态

A it 多余

B 同意well established不好　我觉得这里应该是Leaching,...,as a method这样的句型　所以不需动词　所以应该是as a well-established method比较好

C as early as 无法连接　其他认为C正确的可以举例吗　我没有看过这样的句型

D 我并不觉得that was 多余　如果不是时态我应该会选D

清指教　　谢谢大家!!

valarie

I agree on C.

B - incomplete sentence.

E- Had been has no clear time frame. Perfect past tense has to have a clear time frame (from a point in the past to the point in the past). 不过最关键错是well established 扭曲句意。原句认为leaching is a well-established method ... as early as the 18th century. 不是 "the method was well established as early as 18th century" as E suggests. 就是说，不是18实际建成的，而是在18实际是比较完善的方法。

hiddragon

楼上的美眉：

but until 应该是a clear time frame.

为什么不直接说a good method而说 a well-established method?

well-established 跟时间更合适。

难啊！

bryan0806

up!?

bryan0806

以下是引用enjoy7habits在2004-7-8 16:57:00的发言：

Leaching, the recovery of copper from the drainage water of mines, as a method of the extraction of minerals, it was well established as early as the eighteenth century, but until about 25 years ago miners did not realize that bacteria take an active part in the process.

1. as a method of the extraction of minerals, it was well established
   
2. as a method of the extraction of minerals well established
   
3. was a well-established method of mineral extraction
   
4. was a well-established method of extracting mineral that was
   
5. had been a method of mineral extraction, well established

答案是B,请指教

我选E  因为时态正确　因为有until 用过去完成时可以清楚表达leaching 这个method 一直到25年前才被理解....这里 理解realize是过去式　所以用过去完成时表达比25年前更早的时间的时态

A it 多余

B 同意well established不好　我觉得这里应该是Leaching,...,as a method这样的句型　所以不需动词　所以应该是as a well-established method比较好

C as early as 无法连接　其他认为C正确的可以举例吗　我没有看过这样的句型

D 我并不觉得that was 多余　如果不是时态我应该会选D

那里不对清指正　　谢谢大家!!

携隐

看来看去只有C对.D的that was修饰谁? method? method was as early as?不太对吧.E的had been怎么看怎么不对啊,哪里有时间提示说要用过去完成时啊?

bryan0806

以下是引用携隐在2004-9-23 16:40:00的发言：

看来看去只有C对.D的that was修饰谁? method? method was as early as?不太对吧.E的had been怎么看怎么不对啊,哪里有时间提示说要用过去完成时啊?

嗯 想了一下这里的却是不用过去完成时   因为leaching和后面miners did not realize 是两件事  没有舍么时间关系

但是C  我觉得as early as 需要that(=method) was 来连接

要不然有人可以举例吗  

Leaching was a well-established method of mineral extraction as early as the eighteenth century  这里as early as eighteenth century是舍么作用 我也没看过这样的用法阿  可以这样放在后面形容前面的名词吗?

hiddragon

过去完成时为什么不对？leaching过去是a method of mineral extraction,现在不是了。这里过去和过去完成时都可以，后面动作和时间的连接才是更重要的。

bryan0806

以下是引用hiddragon在2004-9-25 17:08:00的发言：
过去完成时为什么不对？leaching过去是a method of mineral extraction,现在不是了。这里过去和过去完成时都可以，后面动作和时间的连接才是更重要的。

不,我觉得 leaching 现在是不是a method of mineral extraction 并不知道 文中只说一直到25年前miners才了解病毒在过程中是主动的角色

如果文中要强调leaching 现在不是a method of mineral extraction  则需用过去完成时  但我觉得应该没有这样