求教OG 183题

actu

如果一定要在keep和from之间加个it，那把这句改为to be kept from…可以吗？

anyname

为什么选keep it from不选keep from和avoid？ （一家之言，仅供参考。）

首先，“B keeps from doing sth” 和“B avoids doing sth”，语法上并没错，但要求“keep/avoid”和“doing sth”必须是同一主语B (所有“v.+v-ing”都这样）。如：

She can't keep from spending a lot of money in shopping. （she keeps and spends)
She can't avoid spending a lot of money in shopping. （she avoids and spends)

当其主语不同时，则须用B keep C from doing sth. 如下句：

She can't keep him from spending a lot of money in shopping. (she keeps and he spends)

回到这道题，是"（藏宝的人）to keep"，而"being stolen"的是"a chalice"，主语不同，就不能再用keep from/avoid doing sth，而用keep it from使being stolen的逻辑主语变成a chalice才对了。

总结：当遇到“v.+prep.+ doing”或 “v.+doing”时，先看v.和doing的逻辑主语是否一致，如果不一致，必须补宾语，不能假设读者能在上下文中找到v.和doing的各自的逻辑主语。

BTW，to be kept from不对，因为虽然这样a chalice可看成be kept from的逻辑主语，但并没有解决上述的双逻辑主语问题。同样的原因：The person buried a chalice to keep from being stolen by invaders.也是错的，虽然bury和keep的施动者一致。

[此贴子已经被作者于2005-2-13 8:37:41编辑过]

jackychew

第一次“顶”！！楼上的解释有够到位

jones79

totally agree

julietayue

确实解释的很好

芙蓉菜菜

怎么看B还是别扭阿，把B带进去就是：

chalice was probably buried to keep it from being stolen by invaders

it指chalice，chalice was probably buried to keep chalice from being stolen by invaders

我感觉to do的逻辑主语应该和主句的主语一致阿，如果不一致应该用独立主格的。请指点

薰衣紫草

"To do" here indicates the goal of the action. It doesn't necessarily have to comply with the subject.

But if "to do" itself means an action, it has to have an agency to act upon it.

芙蓉菜菜

原来是这样，谢谢薰衣紫草！！

remona9t

总结的好

foreinter

以下是引用chwayne在2004-6-15 22:40:00的发言：

这可是一道跨年度的讨论题，好佩服大家！！！

这种情况不止一次出现：看一下大全的854题的正确选项(E) can usually be modified to make them more effective drugs，与本题的结构用法完全一样：

S+ be done to+ Vt +Pron. 如果S不是Vt的发出者而是Vt的宾语的话，就一定得加个S的代词，这样Vt的逻辑主语和宾语都很清楚，如果不加这个代词就只能理解成S是Vt的动作发出者，所有5个选项中只有B将Vt的逻辑主语宾语交代清楚了，从而避免的歧义。

这个解释说得很清楚