tommy isn't a hardworking student,for it is the third time he has been late,___

问题描述:

tommy isn't a hardworking student,for it is the third time he has been late,___
答案是isn't it
求高手给一个易懂的解释,不要凭语感觉得哪是重点
我感觉不出来啊 给合理有根据的解释

有两点注意:
1.这是个并列句,反意问句在哪个分句,就应该和哪个分句的主谓语保持对应关系
这里,反意问句在后一分句 it is the third time he has been late
2.反意问句 一般得和主句中的主谓语保持对应关系,(I think/suppose .+ 句子除外),这里是 it is the third time多谢你的回答想问下只有I think 此类用法例外吗 还有没有别的还有 I hope ...也是。 其实,千万别死记一些规则什么的,关键是理解。 比如说I think he is a student, isn't he?我肯定不会问don't I (我是这样想的吗?)。怎么样想,还要问别人?!:)