是不是有错啊?虚拟语气用法

问题描述:

是不是有错啊?虚拟语气用法
是不是有错啊?
If he had known the truth,he would hava told you
.
省略if之后,
Had he know the truth,truth,he would hava told you
.
还是这个啊?Had he known the truth,truth,he would hava told you
.

Had he known the truth,he would have told you.