英语翻译

题目

英语翻译
最近在看本语法书,说He pretends not to know about it.=He doesn't pretend to know about it.的解释是他假装不知道这件事,可是我就是想说他不是假装知道这件事,和他不是假装不知道这件事怎么说呢

答案

He pretends not to know about it
不等于
He doesn't pretend to know about it
他不是假装知道这件事
he doesn't/didn't pretend to know
他不是假装不知道
he doesn't/didn't pretend not to know(not to have known)