近些年來,高考的單項(xiàng)選擇和短文改錯中不斷有考察情態(tài)動詞shall/should/must的題干,而考生對于它們的用法并沒有完全把握,因此,梳理shall/should/must的用法,給考生一個清晰的思路和全面的了解.——yes,I will.綜上所述,在疑問句中征詢對方意見,請求許可時：Shall常用于第一,第三人稱; Can常用于第一,第二人稱,也可以用could,回答仍用can; May常用于第一人稱,也可以用might,否定答語mustn't; Will常用于第二人稱,也可以用would,答語仍用will.1.2 shall用于二三人稱的陳述句中表示說話人給對方命令,威脅,允諾（常見于法律,法規(guī),條令） e.g SEFC Book2.unit19.The Merchant Of Venice INTEGRATING SKILLS Reading The MERCHANT OF VENICE(2) P:That is the law.You want justice.So you shall get justice,more than you wanted P:Wait,Shylock,The law of Venice says that if anyone tries to kill or murder any citizen of Venice,everything that he owns shall be taken away from him..One of his money and his goods shall be given to the city of venice and the other half shall given to the person he has tried to kill.His life shall be at the mercy of the Duke… e.g “The interest___be divided into five parts.”declared the judge.A.shouldB.mustC.shallD.can分析：這是過去高考中曾經(jīng)考過的一道單項(xiàng)選擇題,據(jù)語境“declared the judge”可知考察有關(guān)法律法規(guī)條文中表達(dá)命令語氣的情態(tài)動詞shall,所以答案選C,然而很多考生對shall這一用法沒有掌握,錯選A或B.2.關(guān)于should Should可以作為情態(tài)動詞shall的過去式,但should作為情態(tài)動詞,卻有自己的用法.