高三英语复习教案语法五（情态动词）牛津译林版
<p> 情态动词</p><p> 一．情态动词的语法特征</p><p> 1. 情态动词不能表示正在发生或已经发生的事情，只表示期待或估计某事的发生。</p><p> 2. 情态动词 除<span word="ought">ought</span> 和<span word="have">have</span> 外，后面只能接不带<span word="to">to</span> 的不定式。</p><p> 3. 情态动词没有人称，数的变化，即情态动词第三人称单数不加-<span word="s">s</span>。</p><p> 4. 情态动词没有非谓语形式，即没有不定式、分词、等形式。</p><p> 情态动词的分类和意义</p><p> 意义情态动词</p><p> <span word="can">can</span>, <span word="may">may</span>, <span word="might">might</span>, <span word="could">could</span>, <span word="would">would</span>, <span word="will">will</span>, <span word="shall">shall</span>, <span word="must">must</span>, <span word="should">should</span>, <span word="ought">ought</span> <span word="to">to</span>, <span word="used">used</span> <span word="to">to</span></p><p> 二．情态动词的基本用法</p><p> 1. <span word="can">can</span> (<span word="could">could</span>)</p><p> 1) 表示能力，<span word="could">could</span>主要指过去时间。例如：</p><p> ① <span word="Two">Two</span> <span word="eyes">eyes</span> <span word="can">can</span> <span word="see">see</span> <span word="more">more</span> <span word="than">than</span> <span word="one">one</span>. 两只眼比一只眼看得清。</p><p> ② <span word="Could">Could</span> <span word="the">the</span> <span word="girl">girl</span> <span word="read">read</span> <span word="before">before</span> <span word="she">she</span> <span word="went">went</span> <span word="to">to</span> <span word="school">school</span>? 这女孩上学前能识字吗？</p><p> 2) 表示可能（理论上或是逻辑判断上）。例如：</p><p> ① <span word="He">He</span> <span word="can">can</span>’<span word="t">t</span> (<span word="couldn">couldn</span>’<span word="t">t</span>) <span word="have">have</span> <span word="enough">enough</span> <span word="money">money</span> <span word="for">for</span> <span word="a">a</span> <span word="new">new</span> <span word="car">car</span>.他不可能有足够的钱买新车。</p><p> ② <span word="You">You</span> <span word="mustn">mustn</span>’<span word="t">t</span> <span word="smoke">smoke</span> <span word="while">while</span> <span word="you">you</span>’<span word="re">re</span> <span word="walking">walking</span> <span word="around">around</span> <span word="in">in</span> <span word="the">the</span> <span word="wood">wood</span>. <span word="You">You</span> <span word="could">could</span> <span word="start">start</span> <span word="a">a</span> <span word="fire">fire</span>.在林子里走时勿吸烟，那样可能会引起火灾。</p><p> 3) 表示允许。例如：</p><p> ① <span word="Can">Can</span> <span word="I">I</span> <span word="have">have</span> <span word="a">a</span> <span word="look">look</span> <span word="at">at</span> <span word="your">your</span> <span word="new">new</span> <span word="pen">pen</span>? 我可以看一看你的新钢笔吗？</p>
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