英语四六级情态动词的综合用法指导
<p> 情态动词，在英文中主要用来表示说话人的看法、态度等。它很接近中文里的能愿动词。从用法上来说，它有这样几个特点：</p><p> 1)各个情态动词自身都有一定的词义。</p><p> 2)情态动词不能在句中独立担当谓语。</p><p> 3)情态动词在句中不受任何人称,性,数变化的影响。</p><p> 4) 情态动词后接的不定式(除<span word="ought">ought</span>外)都不带<span word="to">to</span> ，即接动词原形。</p><p> 英文中的情态动词主要有：<span word="can">can</span> , <span word="could">could</span> ; <span word="may">may</span> , <span word="might">might</span> ; <span word="must">must</span> ; <span word="ought">ought</span> ; <span word="need">need</span> ; <span word="dare">dare</span> , <span word="dared">dared</span> ，另外，<span word="shall">shall</span> , <span word="will">will</span> , <span word="should">should</span> , <span word="would">would</span>在一定的场合也可用作情态动词。例如：</p><p> <span word="He">He</span> <span word="can">can</span> <span word="speak">speak</span> <span word="five">five</span> <span word="languages">languages</span> .他会说五种语言。</p><p> <span word="She">She</span> <span word="must">must</span> <span word="have">have</span> <span word="arrived">arrived</span> <span word="home">home</span> <span word="by">by</span> <span word="now">now</span> .现在她准到家了。</p><p> <span word="We">We</span> <span word="should">should</span> <span word="study">study</span> <span word="hard">hard</span> <span word="for">for</span> <span word="our">our</span> <span word="motherland">motherland</span> . 我们应该为祖国而努力学习。</p><p> <span word="They">They</span> <span word="neednt">neednt</span> <span word="be">be</span> <span word="in">in</span> <span word="such">such</span> <span word="a">a</span> <span word="hurry">hurry</span> <span word="for">for</span> <span word="there">there</span> <span word="is">is</span> <span word="enough">enough</span> <span word="time">time</span></p><p> <span word="for">for</span> <span word="them">them</span> . 他们还有足够的时间，用不着这么慌张。</p><p> 1. 常用情态动词的基本用法</p><p> <span word="can">can</span> , <span word="could">could</span> 能，会</p><p> (<span word="could">could</span>可以看作是<span word="can">can</span>的过去式，这两个词除了时态不相同外，在表达意思的许多方面是相同的。当然<span word="could">could</span>也有自己独特的用法。)</p><p> 1)表示脑力或体力上的能力</p>
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