2017高考英语冲刺讲义：七 情态动词和虚拟语气
<p> 七、情态动词和虚拟语气</p><p> 情态动词</p><p> <span word="I">I</span>.情态动词基本用法</p><p> 情态动词 用</p><p> 法 否定式 疑问式 简答式</p><p> <span word="can">can</span> 能力（体力，智力，技能）</p><p> 允许或许可（口语中常用）</p><p> 可能性（表猜测，用于否定句或疑问句中） <span word="can">can</span> <span word="not">not</span> / <span word="cannot">cannot</span> /<span word="can">can</span>’<span word="t">t</span> <span word="do">do</span> <span word="Can">Can</span>…<span word="do">do</span>…? <span word="Yes">Yes</span>,…<span word="can">can</span>.</p><p> <span word="No">No</span>,…<span word="can">can</span>’<span word="t">t</span>.</p><p> <span word="could">could</span></p><p> <span word="could">could</span>n’t do</p><p> <span word="may">may</span> 可以（问句中表示请求）</p><p> 可能，或许（表推测）</p><p> 祝愿（用于倒装句中） <span word="may">may</span> <span word="not">not</span> <span word="do">do</span></p><p> <span word="May">May</span>…<span word="do">do</span>…?</p><p> <span word="Yes">Yes</span>,…<span word="may">may</span>.</p><p> <span word="No">No</span>,…<span word="mustn">mustn</span>’<span word="t">t</span>/<span word="can">can</span>’<span word="t">t</span>.</p><p> <span word="might">might</span></p><p> <span word="might">might</span> not do Might…do…? Yes,…might</p><p> <span word="No">No</span>,…<span word="might">might</span> <span word="not">not</span>.</p><p> <span word="must">must</span> 必须，应该（表主观要求）</p><p> 肯定，想必（肯定句中表推测） <span word="must">must</span> <span word="not">not</span>/<span word="mustn">mustn</span>’<span word="t">t</span> <span word="do">do</span> <span word="Must">Must</span>…<span word="do">do</span>…?</p><p> <span word="to">to</span>. <span word="Yes">Yes</span>,…<span word="must">must</span>.</p><p> <span word="No">No</span>,…<span word="needn">needn</span>’<span word="t">t</span>/<span word="don">don</span>’<span word="t">t</span> <span word="have">have</span></p><p> <span word="have">have</span> <span word="to">to</span> 只好，不得不（客观的必须，有时态和人称的变化） <span word="don">don</span>’<span word="t">t</span> <span word="have">have</span> <span word="to">to</span> <span word="do">do</span> <span word="Do">Do</span>…<span word="have">have</span> <span word="to">to</span> <span word="do">do</span>…? <span word="Yes">Yes</span>,…<span word="do">do</span>.</p><p> <span word="No">No</span>,…<span word="don">don</span>’<span word="t">t</span>.</p><p> <span word="ought">ought</span> <span word="to">to</span> 应当（表示义务责任，口语中多用<span word="should">should</span>） <span word="ought">ought</span> <span word="not">not</span> <span word="to">to</span>/<span word="oughtn">oughtn</span>’<span word="t">t</span> <span word="to">to</span> <span word="do">do</span> <span word="Ought">Ought</span>…<span word="to">to</span> <span word="do">do</span>…? <span word="Yes">Yes</span>,…<span word="ought">ought</span>.</p>
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