Question

I was （ ）him last Wednesday but he didn't come.

A.about to see
B.to see
C.about to have seen
D.to have seen
我选A，但答案选D，为什么选D？如果D可以，那C可以吗？
求翻译句子！

Answer 1

I was to have seen him last Wednesday but he didn't come.
上周三我本来可以见到他的，但是他没有来。。
be to do sth 在此表示可能性。。而 be about to do sth 意思是即将，正要，所以不能选C
be about to do sth intend to do sth immediately; be on the point of doing sth 即将; 正要:
As I was about to say when you interrupted me... 我正要说的时候, 你插嘴了...
We're about to start. 我们即将动身.
I'm not about to admit defeat, ie I have no intention of doing so. 我还不想认输.
be (with to + infinitive 与to+不定式连用)
(a) (expressing duty, necessity, etc 表示责任﹑ 需要等):
I am to (ie I have been told to) inform you that... 我有义务（我受人之托）通知你...
You are to report (ie must, should report) to the police. 你应该报警.
(b) (expressing arrangement, intention or purpose 表示安排﹑ 意向或目的):
They are to be married, ie will be married. 他们打算结婚.
Each participant was to pay his own expenses. 每个参加者都必须自费.
The telegram was to say that she'd be late. 电报说她可能晚到.
(c) (expressing possibility 表示可能性):
The book was not to be (ie could not be) found. 那本书找不到了.
(d) (expressing destiny 表示注定):
He was never to see his wife again, ie Although he did not know it at the time, he did not see her again. 他从那以後就再也见不到他的妻子了.
The celebrations were not to be, ie They did not, in fact, take place. 庆祝活动结果未能举行.

Answer 2

I was TO HAVE SEEN him 的意思是，在过去某件事情原本要发生的，但最终没能发生。这时候，你就用be+谓语动词完成式结构。A指的是“将来”。B也是“将来”。C英语中不存在这种结构。
又如：
He was to have left for Germany, but he suddenly fell too ill to move about.

Answer 3

你为啥要执着于about？
我倒是觉得B，D都可以

我本来上周三要见他，但他没来。

Answer 4

be about to do...就要（正要）干......; be to do...应该干....; be to have done...本来应该干.....= should have done....。根据句意，应该选D,而不是C.

Answer 5

这个不好说 自己运量吧