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

问题描述:

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

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.