大全440题

440        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（C）

(E) the only thing that has to be done with cattle is to leave them alone while they feed themselves, to corral them, and

答案C中leave之前没有TO是什么用法？

省略, is that one leave .... and corral and drive....

那该是leaves吧？

I think 'to leave' makes it an infinitive and no longer a verb.  It works here, because you have a sequence of actions.  By using verb instead of infinitive, this sequence is expressed adequetely.

Try it.  if you say  "to leave them, to corra them, and to drive them' then you don't get a sense of sequence.(没有前后节奏感了).

你说的对, 这么看就不是同位语从句了.也可能是把to剩略了,也可能是特输用法. 不过, leve前加上to, 这个选项也是对的.

不对, 不能用 infinitive verb.    看我解释.

动词可以作表语吗？

up

我觉得b更对一点，虽然意思是有先后，但这也确实是句子的顺序，而且OG中最后一个to也确实可以省略，请牛牛执教

最后一个to可省？og里面有过么？