Question

英语选择题

_____to hospital in time,the wounded soldiers were saved at last.
答案是taken,为什么having been taken 不行？
做这种题目一般的解题方法是什么？

Answer 1

_____ to hospital in time, the wounded soldiers were saved at last.
A. Taken B. Taking C. having taken D. To take
答案是taken,为什么having been taken 不行？
做这种题目一般的解题方法是什么？
答：这是个好问题。有一定深度。
非谓语动词作状语，放句首，做这种题目的方法是三步曲：
1.找出非谓语动词的逻辑主语，就是句子的主语the wounded soldiers. 那些受了伤的战士。
2. 判断主动还是被动关系：战士和送去医院是被动关系，排除BCD。
3. 判断时间关系或逻辑关系。如有being taken，则表示从句动作与主句动作同时进行。having been taken则表示从句动作在先，主句动作在后。相当于After the wounded soldiers had been (/was) taken to hospital in time, 在。。。之后。
而taken只强调被动，不重视时间关系。在这里可以理解成原因状语=As they were taken to hospital in time, the wounded soldiers were saved at last.
由于及时送往医院救治，这些伤兵最后都得救了。
比Having been taken更好。
注：为了解释，我从网上找出了相应的题目。答完才知，原题为避免争议，根本没有having been taken这个选项！

追问

那having been taken到底可不可以啊？

Answer 2

士兵已经好了说明前面已经完成了 用Had been taken ,这里是独立主格结构！
.having been done 是过去分词的完成时态,属于非谓语动词。分词短语的逻辑主语是否省略，则要看分词短语的逻辑主语是否和主句的主语一致。如果一致，则分词短语的逻辑主语可以省略；如果不一致，则分词短语的逻辑主语要表示出来，这种分词短语也叫独立主格结构。请看例句：
Being sick, I stayed at home=Because I was sick,I stayed at home.( 现在分词短语的逻辑主语是 I，和主句的主语I一致，可省略） 我因病呆在家中。
The monitor being ill, we had better put off the meeting off.=Because the monitor was ill, we had better put off the meeting .(现在分词短语的逻辑主语是the monitor, 和主句的主语we不一致，所以要补充出来。）班长病了，我们最好还是延期开会吧。

Answer 3

因为是一般过去时