高考英语配套教学课件《Unit 1 Getting along with others》专题语法攻略（十三） 情态动词 译林版必修5
<p> 情态动词一直是高考的考查重点。主要侧重于： 1．情态动词表推测的用法。 2．情态动词＋<span word="have">have</span> <span word="done">done</span>的用法。 一、情态动词的基本用法 <span word="can">can</span>/ <span word="could">could</span> (1)<span word="can">can</span>可以表示能力 (2)表示请示的允许 (3)表示惊异、怀疑、不相信的态度，主要用于肯定句、否定句和疑问句中 (4)表示客观的可能性 (5)用于肯定句表推测时，指理论上的可能性，并不涉及是否真的发生 (6)<span word="could">could</span>可表示请求，语气较之<span word="can">can</span>更委婉，多用于疑问句，答语应用<span word="can">can</span> (1)<span word="Accidents">Accidents</span> <span word="can">can</span> <span word="happen">happen</span> <span word="on">on</span> <span word="such">such</span> <span word="rainy">rainy</span> <span word="days">days</span>.这样的多雨天气可能会发生事故。(客观的可能性) (2)<span word="Someone">Someone</span> <span word="is">is</span> <span word="knocking">knocking</span> <span word="at">at</span> <span word="the">the</span> <span word="door">door</span>.<span word="Who">Who</span> <span word="can">can</span> <span word="it">it</span> <span word="be">be</span>？有人敲门，会是谁呢？(表推测)</p><p> (3)<span word="He">He</span> <span word="can">can</span>'<span word="t">t</span> <span word="be">be</span> <span word="at">at</span> <span word="home">home</span> <span word="at">at</span> <span word="this">this</span> <span word="time">time</span>. 这时他不可能在家。(表推测) <span word="may">may</span>/<span word="might">might</span> (1)表示请求许可(用于疑问句中)，<span word="might">might</span>语气更委婉 (2)表示推测，<span word="might">might</span>可能性小于<span word="may">may</span> <span word="This">This</span> <span word="may">may</span>/<span word="might">might</span> <span word="be">be</span> <span word="done">done</span> <span word="by">by</span> <span word="him">him</span>.这件事有可能是他做的。 <span word="must">must</span> (1)表示主观要求 (2)表推测(只用于肯定句)</p><p> (3)表禁止(用于否定式) <span word="Mother">Mother</span> <span word="must">must</span> <span word="be">be</span> <span word="cooking">cooking</span>.妈妈肯定在做饭。 <span word="shall">shall</span> (1)<span word="shall">shall</span>用于第一、第三人称疑问句中，表示说话人征求对方的意见和向对方请示 (2)用于第二、第三人称陈述句中，表示说话人给对方的命令、警告、允诺或威胁 <span word="Shall">Shall</span> <span word="I">I</span> <span word="go">go</span> <span word="with">with</span> <span word="you">you</span>？ 我和你一起去吗？ <span word="You">You</span> <span word="shall">shall</span> <span word="get">get</span> <span word="an">an</span> <span word="answer">answer</span> <span word="from">from</span> <span word="me">me</span> <span word="by">by</span> <span word="tomorrow">tomorrow</span>.到明天你会得到我的答复。 <span word="should">should</span>/<span word="ought">ought</span> <span word="to">to</span> (1)用于表示劝告和建议，作“应该”讲，用于第一人称疑问句表征询意见 (2)用于表示推测，<span word="should">should</span> <span word="do">do</span>表示对将来情况的推测，说明某个情况是合理的，符合逻辑的 (3)应当(表示义务、责任，<span word="ought">ought</span> <span word="to">to</span>的语气比<span word="should">should</span>强，口语中多用<span word="should">should</span>)</p>
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