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素心守拙

挽不住步履匆匆流年逝去,只留得一颗淡月素心经营这无欲无尘的心灵家园。

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小知识点：have no choice but to do 和could do nothing but do的区别

2011-03-22 09:55:48| 分类：英语学习 | 标签： |举报 |字号大中小订阅

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could是情态动词,后面的动词必须跟原形,所以并列的but后面也必须跟动词原形;
have + n (+ to do),和上面一样,并列的前后要一致,所以but后面必须也是动词不定式

but做介词(except的用法也基本相同)，有时后接带to的动词不定式，有时后接不带to的动词不定式。
当句子中有do时，but后面跟的动词不定式通常不用to，其基本结构是：
do nothing (anything) but……；have……to do but。否则，不定式符号to不能省略。如：
The enemy could do nothing but surrender.
敌人毫无办法，只得投降。
There is nothing left to him but to hit back.
他只能回击，别无他法。
试比较：There is nothing left for him to do but hit back.

练习：We could do nothing but ________ the order.

A.obey B.to obey C. obeying D. obeyed

答案：A

We have no choice but to resort to arbitration.
我们另无选择，只能诉仲裁。

We have no choice but to turn back.
没办法，我们只有回去。

They have no choice but to lie down and sleep .
他们别无选择，只好躺下来睡觉

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