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有没有语法高手可指点一下,万分感谢.

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楼主
发表于 2003-10-7 21:54:00 | 只看该作者

有没有语法高手可指点一下,万分感谢.

1, The most important chemical catalyst on this plane is chlorophyll, ---------carbon dioxide and water react to form carbohydrates.
A whose presence               
B which is present
C which is present
D in the presence of which
Why D is the right key?

2, __________at the site of a fort established by the Northwest Mounted Police. Calgary is now one of Canada’s fastest growing cities.

A- Built,   B-it is built   C- To build     D- Having built
The key is A, but what's wrong with  C ?

4, (When used) as food (additives), antioxidants prevent fats and oils from (become) rancid when exposed to air, (and thus) extend their shelf life.
What’s wrong with C?


5, The western world is (beset) with range of (problem) that characterize (mature), postindustrial (societies).
Is problem need plus s?

6, Acrylic (paints) are (either) applied (using) a knife or diluted and (spreading) with a paintbrush.

Is C/using right? What’s wrong with D?

Thanks.


沙发
发表于 2003-10-7 22:16:00 | 只看该作者
1. 划线后面是完整的句子,所以只有D 引导的从句可以在句中充当状语.
2.本句主语为Calgary, 它是被修建的, 因此以过去分词built 作状语. C 中to built, 表示动作的发起人是Calgary,逻辑意思不合理.
4.from 后应用动名词becoming
5.problem 应加s, 因为后面的谓语为characterize
6. spread 与diluted并列, 表被动的意思, 应使用过去分词. using 表示伴随状语
板凳
发表于 2003-10-7 22:16:00 | 只看该作者
1、空格前后都是完整的句子,因此空格出应为连词,且不能在从句中做成分。再看选项中有whose(不对,它要在句中做成分),which,不能引导完整句子,即也要做句子成分,只有介词+which,才能接完整句子。
2、A表明,句子的逻辑主语是被动的动作承受者;而C,则相反。
4、这是考prevent ...from doing用法
5、是的,如果拿不准problem的可数与否的话,从后面的动词形式也可看出。
6、若拿不准B,可由either or的用法,分出两个大并列;再看and的小并列,就有问题了:diluted 和 spreading。
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