I wasn't sure if he was really interested or if he_____polite.

问题描述:

I wasn't sure if he was really interested or if he_____polite.
A will just be
B was just being
C had just been
D would just be
这道题考察什么知识点
为什么选那个选项

这题考查时态.
题意:我不确定他是不是真的感兴趣或者他只是出于礼貌.
解析:这里主句用一般过去时可知这个是已经发生的了,只是我当时在猜想,所以先排除A和D.be polite“对...有礼貌”一般不用进行时态,C答案发生在过去的过去,故C是正确答案.这里也可以用was just
有疑问可以再提出,正确答案是B啊 had been 表示过去发生的动作对现在的影响,但是题意不是这样,所以B,我的解释对吗你的解释不太对。不过这里我也疏忽了一下。这里从句应该是要保持时态一致的,都是过去时,两个从句都用was