我昨天不在是 I wasn't here yesterday 还是 I weren't here yesterday?

问题描述:

我昨天不在是 I wasn't here yesterday 还是 I weren't here yesterday?

用wasn't, 因为主语是第一人称,谓语从此过去式用was
I 后用were的情况有一种,那就是虚拟语气中,be动词的形式都是were,没有was