prep07 T28请教XDJM~~~~

zuoyehaoduo111

Polio, although it is eradicated in the United States, it continues elsewhere and is able to be brought into the country by visitors.

(A)Polio, although it is eradicated in the United States, it continues elsewhere and is able to be

(B)Polio, although eradicated in the United States, it still continues elsewhere and can be

(C) Although still continuing elsewhere, polio has been eradicated in the United States and could be

(D) Although having been eradicated in the United States, polio still continues elsewhere and is capable of being

(E) Although eradicated in the United States, polio continues elsewhere and could be

这里有两个问题，主要在D选项上：
1、having been eradicated是正确形式吗？貌似manhattan中说过一般现在时和现在完成时有时候可以互换来着……2、still和continue是不是重复了？

TerraceHo

1、although （polio is） having been eradicated  補充完整不對
2、不是，lz可以google/baidu一下still和continue合用的例句~
still表示仍然，做adverb修飾“繼續”

zuoyehaoduo111

啊啊~~谢谢大侠指点~~~现在有点糊涂，内个although having been eradicated  补充完整后是进行时态吗？就是although polio is having been eradicated 吗？还是完成时态although polio has been eradicated?换句话说although+过去完成时的省略形式是 although have been done还是although having been done 呢？还有啊~请教一下省略主谓是不是要考虑到时态啊？例如说although从句是一般过去时，主句是一般现在时，而其他各个方面都符合条件的时候（如主从句主语一致且从句有be,although从句位置也符合的时候）可不可以省略although从句主谓呢？请大侠指点！！！！！万分感谢！！！！！

TerraceHo

although：主句跟從句主語相同時，可以省略從句的"主語 + be"（包括are/is/were/was）

e.g. (E) Although （polio is） eradicated in the United States, polio continues elsewhere and could be
這裡根據後面時態可以判斷，從句省略的是主語polio，以及be動詞is（was表示過去發生的事現在已經不是這樣了，用is來表示到現在還是確定的事實較優）

不存在be動詞跟完成時合用的時態-->即be having done是錯的
although having been eradicated-->although結構省略了“主語+be”，加上polio is補充完整後的結構是錯的-->所以lz可以簡單地認為，although having done是錯的

要表達although polio has been eradicated，不能省略任何內容-->省略的只能是“主語 + be”

一般是主從句時態一致的時候，即同past/present/future，才能省略主語+be。

hope that helps\(0^◇^0)/

zuoyehaoduo111

哦哦哦~~这下了解了！！！谢谢大侠指点！！！！！