高三英语语法笔记 Unit 25 Grade 1 情态动词
<p> <span word="Model">Model</span> <span word="Verbs">Verbs</span></p><p> <span word="You">You</span> <span word="must">must</span> <span word="be">be</span> <span word="joking">joking</span>! 你一定是在开玩笑! <span word="You">You</span> <span word="cant">cant</span> <span word="be">be</span> <span word="serious">serious</span>! 你不会是认真的吧! <span word="That">That</span> <span word="may">may</span> <span word="be">be</span> <span word="so">so</span>. 那也许是这样。<span word="There">There</span> <span word="must">must</span> <span word="be">be</span> <span word="some">some</span> <span word="mistake">mistake</span>. 准是出了什么差错。</p><p> 1. <span word="must">must</span>作必须、准是、一定讲，表示我们对某事确有把握的推论或揣测。而另外一个表示推测的词 <span word="may">may</span>/<span word="might">might</span> 就比 <span word="must">must</span> 在语气上要稍弱一些，如：</p><p> <span word="I">I</span> <span word="always">always</span> <span word="meet">meet</span> <span word="him">him</span> <span word="at">at</span> <span word="the">the</span> <span word="street">street</span>. <span word="He">He</span> <span word="must">must</span> <span word="live">live</span> <span word="quite">quite</span> <span word="near">near</span> <span word="here">here</span>. 我总在这条街碰见他，想必他就住在附近。<span word="I">I</span> <span word="always">always</span> <span word="meet">meet</span> <span word="him">him</span> <span word="at">at</span> <span word="the">the</span> <span word="street">street</span>. <span word="He">He</span> <span word="may">may</span>/<span word="might">might</span> <span word="live">live</span> <span word="quite">quite</span> <span word="near">near</span> <span word="here">here</span>. 我常在这条街碰到他，可能他就住在这附近。</p><p> 2. <span word="must">must</span> 表示推测只用于肯定句。疑问句、否定句中常用<span word="can">can</span>(<span word="cant">cant</span>)。如：<span word="Can">Can</span> <span word="he">he</span> <span word="really">really</span> <span word="be">be</span> <span word="ill">ill</span>? 他真的病了吗？ <span word="What">What</span> <span word="do">do</span> <span word="you">you</span> <span word="think">think</span> <span word="this">this</span> <span word="invitation">invitation</span> <span word="can">can</span> <span word="mean">mean</span>? 你认为这份请柬可能意味着什么呢? <span word="She">She</span> <span word="cant">cant</span> <span word="be">be</span> <span word="a">a</span> <span word="professor">professor</span><span word="shes">shes</span> <span word="so">so</span> <span word="young">young</span>. 她不可能是教授她那么年轻。</p><p> 3. 情态动词 + <span word="be">be</span> <span word="doing">doing</span>表示对现在正在发生的动作表示推测；情态动词 + <span word="have">have</span> <span word="done">done</span>表示对过去的推测，如：<span word="He">He</span> <span word="might">might</span> <span word="be">be</span> <span word="doing">doing</span> <span word="his">his</span> <span word="lessons">lessons</span> <span word="now">now</span>. 他也许正在做功课吧。<span word="Can">Can</span> <span word="he">he</span> <span word="really">really</span> <span word="be">be</span> <span word="waiting">waiting</span> <span word="for">for</span> <span word="us">us</span>? 他真地在等我们？<span word="It">It</span> <span word="must">must</span> <span word="have">have</span> <span word="rained">rained</span> <span word="last">last</span> <span word="night">night</span>. 昨天晚上肯定下雨了。<span word="Can">Can</span> <span word="she">she</span> <span word="have">have</span> <span word="told">told</span> <span word="a">a</span> <span word="lie">lie</span>? 她会说谎吧？</p>
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