I’m certain he wasn’t in the classroom.I saw him in the library.

题目

I’m certain he wasn’t in the classroom.I saw him in the library.
这个句子可以说he is not 用现在时吗
可不可以说I’m certain he isnt in the classroom.我确定他现在不再教室里 I saw him in the library.我刚才看到他在阅览室

答案

很高兴为您
不可以哦
我肯定他当时不在教室,我当时看到他在图书馆.