he expained it to students that he was ill that day为什么explained后面要加it?
问题描述:
he expained it to students that he was ill that day
为什么explained后面要加it?
答
it指代这件事
答
it 是充当expain的谓语,that he was ill that day是it所指的内容,由于谓语太长就移到后面.