he does know that.He did know that.他确实知道那件事.那么如果是一般现在时可以说:He does know that.

问题描述:

he does know that.
He did know that.
他确实知道那件事.
那么如果是一般现在时可以说:
He does know that.

直接说HE knows that,如果要表达他的确知道就用he really knows that

可以,用does来强调一般现在式。

可以!
这是英语强调句的用法.即主语 + do/does/did + 动词原形,专门强调谓语动词的!
do/does/did 此时译作“的确,确实”

可以