我完全误解了他的意图。用英语怎么说？

我完全误解了他的意图。

I had completely misread his intentions.

had

v. 有（ have的过去式和过去分词 ），（亲属关系中）接受，拿，买到；

例句
He claimed that his parents had abandoned him...
他声称父母遗弃了他。

completely

adv. 完全地，完整地，完全，彻底，全部，一干二净，很，非常，充分，十分，万分；

例句
...a second career which absorbed her more completely than her acting ever had.
比演艺生涯更让她投入的又一职业

misread

vt. 读错，念错，对…判断错误；

例句
You couldn't be more mistaken, Alex. You've utterly misread the situation.
亚历克斯，你真是大错特错，你对局势的判断根本不对。

his

pron. (he的所有格)他的，(he的物主代词)他的东西；det. 属于他的，用于名词前，自己的，指某人的，上帝的；

例句
He claimed that his parents had abandoned him...
他声称父母遗弃了他。

intentions

n. 意图( intention的名词复数 )，意向，目的，打算；

例句
The object of his amorous intentions is Martina.
他想和马丁娜发生性关系。