2010中考英语重点语法词法考点十：情态动词
<p>一．情态动词的用法</p><p>1. <span word="can">can</span> 用法</p><p>1）表示能力，与<span word="be">be</span> <span word="able">able</span> <span word="to">to</span>同义，但<span word="can">can</span>只用于现在时和过去时，<span word="be">be</span> <span word="able">able</span> <span word="to">to</span>可用于各种时态。</p><p><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>. </p><p>注：<span word="Can">Can</span> <span word="you">you</span>? <span word="Yes">Yes</span>, <span word="I">I</span> <span word="can">can</span> / <span word="No">No</span>,<span word="I">I</span> <span word="cant">cant</span>.</p><p>2).表示允许、请求</p><p>用<span word="could">could</span>比<span word="can">can</span> 语气更加委婉客气，常用于<span word="could">could</span> <span word="I">I</span> /<span word="you">you</span> ..?句型中，若表示同意时，用<span word="can">can</span>回答而不用<span word="could">could</span> .</p><p><span word="Could">Could</span> <span word="I">I</span> <span word="borrow">borrow</span> <span word="the">the</span> <span word="book">book</span> ? <span word="No">No</span>, <span word="you">you</span> <span word="cant">cant</span> .</p><p>3）。表示推测 可能常用于否定句或疑问句中。（<span word="cant">cant</span>表示一定不是）</p><p><span word="It">It</span> <span word="cant">cant</span> <span word="be">be</span> <span word="true">true</span> .</p><p><span word="Can">Can</span> <span word="it">it</span> <span word="be">be</span> <span word="true">true</span> ?</p><p>2. <span word="may">may</span> 用法</p><p>1）表允许，请求= <span word="can">can</span> </p><p> 表示许可或征求对方的许可，常于第一人称连用。</p><p>注：<span word="May">May</span> <span word="I">I</span> .? <span word="Yes">Yes</span> ,<span word="you">you</span> <span word="may">may</span> <span word="No">No</span>, <span word="you">you</span> <span word="cant">cant</span> / <span word="mustnt">mustnt</span> .</p><p>在回答以<span word="may">may</span>引起的问句时，多避免用这个词，而用其它方式，如<span word="Yes">Yes</span>, <span word="please">please</span>. / <span word="Certainly">Certainly</span>.</p><p>2）表推测，可能、也许。常用于肯定句中。</p><p><span word="Maybe">Maybe</span> <span word="he">he</span> <span word="knows">knows</span> <span word="the">the</span> <span word="news">news</span> .=</p><p><span word="He">He</span> _____ _____ <span word="the">the</span> <span word="news">news</span>. </p><p>3. <span word="must">must</span></p><p>1）表示义务。意为必须（主观意志）。</p><p><span word="We">We</span> <span word="must">must</span> <span word="do">do</span> <span word="everything">everything</span> <span word="step">step</span> <span word="by">by</span> <span word="step">step</span>. </p><p>注：<span word="Must">Must</span> <span word="I">I</span> .? <span word="Yes">Yes</span>, <span word="you">you</span> <span word="must">must</span> / <span word="No">No</span>,<span word="you">you</span> <span word="neednt">neednt</span>(<span word="dont">dont</span> <span word="have">have</span> <span word="to">to</span> ).</p><p>--<span word="Must">Must</span> <span word="we">we</span> <span word="hand">hand</span> <span word="in">in</span> <span word="our">our</span> <span word="exercisebooks">exercisebooks</span> <span word="now">now</span>? </p>
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