must 加动词原形表达一种比较肯定的推测，而表示否定的推测则要用can‘t。，can‘t,must,单词记忆法、语法用法，与can‘t,must, 相关例句、名人名言

must单词相关例句：

We must accept finite disappointment, but we must never lose infinite hope. ( Martin Luther King, Jr.)——    我们必须接受失望，因为它是有限的，但千万不可失去希望，因为它是无穷的。（马丁。路德。金）
The world can be changed by man's endeavor, and that this endeavor can lead to something new and better .No man can sever the bonds that unite him to his society simply by averting his eyes . He must ever be receptive and sensitive to the new ; and have sufficient courage and skill to novel facts and to deal with them . (Franklin Roosevelt , American President )——人经过努力可以改变世界，这种努力可以使人类达到新的、更美好的境界。没有人仅凭闭目、不看社会现实就能割断自己与社会的联系。他必须敏感，随时准备接受新鲜事物；他必须有勇气与能力去面对新的事实，解决新问题。(美国总统 罗斯福建. F.)  
He that would command must serve. 欲做先生，先做学生。
They who cannot do as they would, must do as they can. 不能为所欲为者，也当尽力而为之。
Errors, like straws, upon the surface flow; he who would search for pearls must dive below. 错误像稻草，漂浮在水面。欲觅珍珠者，须往水下潜。
He who would search for pearls must dive below(or deep). 欲寻珍珠，须潜水下。
Wherever in the world a people knows desperate want, there must appear at least the spark of hope, the hope of progress--or there will surely rise at last the flames of conflict.——Dwight Eisenhower,Commander in chief of the Allied forces in the second World War 任何地方，一个民族只要知道自己迫切需要什么，那里就会出现希望的火花，出现进步的希望，换句话说，最后必定会燃起抗争的火焰。第二次世界大战中盟军最高司令 艾森豪威尔，D.
He that will have his farm full, must keep an old cock and a young bull. 要使农家富又足，必须养鸡又养牛。
Disease, enemy, and debt --these three must be cut off as soon as they begin to grow. 病，仇与债这三者，一露苗头就砍掉。
As you make your bed so you must lie on it. 自食其果。