must的反义疑问句为什么在You must have made the mistake,_______?答案是have

must在这里是表猜测的,解释为“肯定,想必一定”.教你一个简单的方法：
将must变成I am sure + 去掉must的句子,谓语动词随“当时”,看例句吧,这样更容易理
1 You must have made the mistake,haven't you
== I am sure you have made the mistake,haven't you?
2 They must have stayed at the hotel last night,didn't they?
== I am sure they stayed at the hotel last night,didn't they?
我相信,你已经看懂了.简单吗?
现在,你完成下面三句：
She must have been to the headmaster's office,___________?
She must have been in the headmaster's office (yesterday) ,____________?
She must have left before he arrived,___________?
(hasn't,wasn't,hadn't )

如需编辑回答或插入图片，请点击标题到问题详情页陈述部分有must 的疑问句，疑问部分根据实际情况而定。 　　
A．must表示“应该”，其疑问部分用mustn't（不应该），如：You must work hard next term, mustn't you ? 下学期你应该努力学习，对吗？ 　　
B．must表示“必须”，其疑问部分用needn't（不必），如：They mus...

she　must　have　finished　reading　the　novel　last　night，【didn＆＃39；t　she　】？句中有时间的标志性短语　last　　night，时态就只能用一般过去时，不可以用完成时。【反义疑问句肯定要根据时态，所以是didn＆＃39；t　she　】陈述部分有must　的疑问句，疑问部分根据实际情况而定。　　　A．must表示“应该”7其疑问部分用mus...