白勇题目Test8-21

ah_xin

21. It is an oversimplified view of cattle raising to say that all one has to do with cattle is leave them alone while they feed themselves, corral them, and to drive them to market when the time is ripe.
(A) all one has to do with cattle is leave them alone while they feed themselves, corral them, and to
(B) all one has to do with cattle is to leave them alone to feed themselves, to corral them, and
(C) all one has to do with cattle is leave them alone while they feed themselves and then corral them and
(D) the only thing that has to be done with cattle is leave them alone while they feed themselves, corral them, and
(E) the only thing that has to be done with cattle is to leave them alone while they feed themselves, to corral them, and

ans is C, but can we use "do sth. , and then do sth. , and do sth."??

Thks!

joe11

This is a special case. 用排除法选出的。

比较 C, D, 发现D 得主语 the only thing that 不如 C 中的 all one has to do 好，所以选了 C.

详细解释见 GMAT 语法改错精解 Pp.101, 6-12.

三脚猫

(C) all one has to do with cattle is leave them alone while they feed themselves and then corral them and
但是is 和leave的关系是什么，我怎么觉得这个句子结构有问题啊？

joe11

.. is (to) leave them along ... (to) corral them .... (to) drive them ...

所有的不定势中的 to 都省略了。

三脚猫

这一规则可以普遍适用吗？我怎么一点印象没有？