Question

I _______ her if I thought she would understand. A.would tell B.will tell C.would have told D.tell

为什么选C不选A，不是if虚拟语气吗

Answer 1

“would+have+done”是虚拟语气，表示对过去事情的假设，意思是“本来会做”。
“would do”是一种委婉的礼貌表达方式
这句话的意思是“如果我认为她能懂的话，我会告诉她”（但是没告诉）。

希望能够帮助到你~采纳为盼！ 谢谢~

Answer 2

would have told的意思就是本来可以告诉她但是没告诉她，所以应该选C，碰到这种题都是选would have done

Answer 3

C表示想做却没做。