She examined the door again for fear that a thief should come in这句话是虚拟语气,它虚拟在哪里了啊,哪个句子是虚拟的,

问题描述:

She examined the door again for fear that a thief should come in
这句话是虚拟语气,它虚拟在哪里了啊,哪个句子是虚拟的,

should..看见没?虚拟的标志

that后面接的是虚拟的
害怕小偷进来,但事实上小偷没进来,所以这里是虚拟的.