must have done sth造句？
must have done过去一定做了某事，根据must的本意即可推敲出意思。
The lights were out. Th搜趣网ey must have been asleep. 灯灭了，他们应该睡觉了。
The ground is wet.It must have rained last night.地面很湿,昨晚一定是下过雨了。
You must have seen him. 你想必曾经见过他了。
The door droops a little; there must have been something wrong with the hinges.
门有点下坠，铰链一定（想必曾经）出了问题。
You must have seen her if you had been here yesterday.
要是昨天你在这里，你一定见到他了。
（实际上昨天你并不在这里，所以昨天实际上你不曾见到她。）
Any applicant for this position must have practised for six years.
凡申请该职务者，必须具有六年的实践经验。
The lights were out. Th搜趣网ey must have been asleep. 灯灭了，他们应该睡觉了。
The ground is wet.It must have rained last night.地面很湿,昨晚一定是下过雨了。
You must have seen him. 你想必曾经见过他了。
The door droops a little; there must have been something wrong with the hinges.
门有点下坠，铰链一定（想必曾经）出了问题。
You must have seen her if you had been here yesterday.
要是昨天你在这里，你一定见到他了。
（实际上昨天你并不在这里，所以昨天实际上你不曾见到她。）
Any applicant for this position must have practised for six years.
凡申请该职务者，必须具有六年的实践经验。
must have been stay
Must have been後面动词,形容词,分别接什麼形式?可以接副词麼? 书上有句he must have been stay at home ,stay at home 它和 he must have stayed at home相同么?tay at home 是动词词组（动词+副词）
he must have been stay at home 这种表达是错的,have been+doing must表示对事情的肯定推测
或者 have been done(被动语态) 表示被完成了
不懂再问哦,亲
he must have been stay at home 这种表达是错的,have been+doing must表示对事情的肯定推测
或者 have been done(被动语态) 表示被完成了
不懂再问哦,亲
must have been doing
must have been 或canx27t have been后面加动词一定是ing型吗must have been ... 那时一定是 can'搜趣网t have been... 那时不可能是
must have been doing意思是 一定一直都在做某事She is so tired .She must has been working all the morning.她很疲劳了她一定工作了一个早上。
must have been doing 表示肯定的猜测
并且猜测这种动作,或者行为一直持续到现在
还有must have been done是must have done的被动形式。
是对过去发生的动作最有把握的猜测，意思是“一定。”
must have been doing意思是 一定一直都在做某事She is so tired .She must has been working all the morning.她很疲劳了她一定工作了一个早上。
must have been doing 表示肯定的猜测
并且猜测这种动作,或者行为一直持续到现在
还有must have been done是must have done的被动形式。
是对过去发生的动作最有把握的猜测，意思是“一定。”
must have been的用法和意思
关于must have been的用法 must have been用法是作对过去的事情猜测,例如she must have been a singer 但是如果有一句话是这样,he must have noticed me,我应该翻译成“他曾一定是注意到我了”还是翻译成“你本必须注意到我（实际上没注意到）” 应该怎么区分这两种用法Must have been当时一定是，表示对过去某一时刻内动作的猜测，否定can't have been当时不可能是
must be和must have的区别
must 搜趣网be和must have的区别综述：must have been和muwww.souquanme.comst be的区别在have在这里表示是动作已经完成。所以must have been是对过去的事实的肯定猜测must be是对现在事实的肯定猜测。
重点词汇：must
英［məst］
释义：
aux.必须；一定；应该，得
n.绝对必要的事物；待发酵的葡萄汁；发霉，潮气
n.（Must）（美）穆斯特（人名）
［复数：musts；第三人称单数：musts；现在分词：musting；过去式：musted；过去分词：musted］
短语：
Romeo Must Die致命罗密欧；罗密欧必死；致命豪杰
词语使用变化：must
aux.（助动词）
1、must表示义务或强制，含意是“必须”“应当”；其否定结搜趣网构表示“不许可”或“不应该”；用于一般疑问句时，表示征求对方的意见，其肯定答语用Yes，please或I＇m afraid so，否定答语用needn＇t或don＇t have to；must在间接引语中表过去。
2、must表示必然性，一般只用于肯定句中，有时表示“意愿”，带有感情色彩。
3、must表示推测，暗含很大的可能性，一般只用于肯定句中，在否定句中表示推测用can＇t而不能用mustn＇t。
