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必须拥有；非有不可
1、must s───必须
2、must like───一定喜欢
3、be must───必须
4、must───n.(Must)（美）穆斯特（人名）；n.绝对必要的事物；待发酵的葡萄汁；发霉，潮气；aux.必须；一定；应该，得
5、must have to───一定要
6、make mistskin must have───使薄雾皮肤必须有
7、the must───必须的
8、must have done───必定做了…（表示对过去的推测）
9、must make───必须使
1、There is no doubt, however, that the Mayas must have been familiar with cocoa several centuries earlier.───毫无疑问，玛雅人已在几个世纪前就对可可有所认识了。
2、Somebody at Penn must have listened to me (or one of the other complainers), because that course is now taught in Java.───宾夕法尼亚大学里一定有人听到了我的呼声（或者听到了其他抱怨者的呼声），因为如今这门课讲授的计算机语言是Java。
3、Terrified as I was, I could not help thinking to myself that this must have been how Mr Arrow got the strong waters that destroyed him.───我当时虽然吓得魂不附体，仍情不自禁地想着：“让埃罗先生送了性命的那些烈酒大概就是从那里来的。”
4、Applicants must have their own transport.───申请人必须有自己的交通工具。
5、Your trip must have been fun!───你这次旅行一定很开心吧！
6、Another voice must have answered him, for he replied to it: "Yes, yes! It is the right day, but this is not the place. "───大概还有另一个声音在回答他，因为他答着腔说道：“没错，没错，日子是对的，但地点不是这里”
7、"He must have dashed into a shop near work and just bought them, " she complained. "There was no thought put into it. "───“他一定是冲进公司附近的一家店铺，直接就买下来的，”她抱怨说，“他根本没有花心思。”
8、That car must have cost a packet.───那辆汽车一定花了一大笔钱。
9、Although the mother must have real characteristics, there must be an air of mystery.───虽然母亲必须有真正的特色，就必须有一个神秘的气氛。
1、You must have found my attitude annoying.
2、I cannot find my watch;I must have lost it.
3、Scanderbeg’s sword must have Scanderbeg’s arm.
4、Desperate diseases must have desperate cures.
5、He that sups with the devil must have a long spoon.
6、A boisterous horse must have a rough bridle.
7、The longest day must have an end.
8、A good surgeon must have an eagle’s eye, a lion’s heart, and a lady’s hand.
9、You must have mistaken my intentions.