Question

Walter offered us a lift when he was leaving the office,but our work__,we declined the offer.

A.was not finished B.did not finish C.has not been finished D.not having been finished
选哪个？为什么?

Answer 1

Walter offered us a lift when he was leaving the office,but our work__,we declined the offer.
选择d
解释：
句子可以看成：Walter offered us a lift when he was leaving the office,but we declined the offer。
but 后边是一个完整的句子，根据意思和形式，we declined the offer 已经是完整的了，而“工作没有完成”是我们拒绝的原因。but 是连词，后面只能是一个完整句子，所以our work 使用独立主格结构，即not having been finished

独立主格结构（Independent Genitive）有两部分组成，前一部份是名词或者代词，后一部分是非谓语动词(不定式、动名词和分词)或形容词、副词、或介词短语。前后两部分具有逻辑主谓关系。独立主格结构在句中做状语，多用于书面语。 独立主格结构本身不是句子，在句子中作状语，表示时间、原因、条件、伴随、目的等。

Answer 2

not being finished

Answer 3

D，原因是but our work 。。。属于插入语，其它三个选项都是一个完整的句子。语感也教我选D

Answer 4

嗨 您好！
我来帮您解释

Walter offered us a lift when he was leaving the office,but our work__,we declined the offer.

答案我会选择 C

因为属于过去完成时，在“walter" 当下问的时候我们还没有做完，所以要选 Has not been finished.

希望能帮得上忙 :)