［动词的语态］need/want/require/worth
<p> 当 <span word="need">need</span>， <span word="want">want</span>， <span word="require">require</span>， <span word="be">be</span> <span word="worth">worth</span>后面接<span word="doing">doing</span>时，表示的是被动意义。例如：</p><p> <span word="Your">Your</span> <span word="hair">hair</span> <span word="wants">wants</span> <span word="cutting">cutting</span>. 你的头发该理了。</p><p> <span word="The">The</span> <span word="floor">floor</span> <span word="requires">requires</span> <span word="washing">washing</span>. 地板需要冲洗。</p><p> 典型例题</p><p> <span word="The">The</span> <span word="library">library</span> <span word="needs">needs</span>___， <span word="but">but</span> <span word="itll">itll</span> <span word="have">have</span> <span word="to">to</span> <span word="wait">wait</span> <span word="until">until</span> <span word="Sunday">Sunday</span>.</p><p> <span word="A">A</span>. <span word="cleaning">cleaning</span> <span word="B">B</span>. <span word="be">be</span> <span word="cleaned">cleaned</span> <span word="C">C</span>. <span word="clean">clean</span> <span word="D">D</span>. <span word="being">being</span> <span word="cleaned">cleaned</span></p><p> 答案<span word="A">A</span>. <span word="need">need</span> （实意） +<span word="n">n</span> /<span word="to">to</span> <span word="do">do</span>，<span word="need">need</span> （情态）+ <span word="do">do</span>，当为被动语态时，还可<span word="need">need</span> + <span word="doing">doing</span>. 本题考最后一种用法，选<span word="A">A</span>.如有<span word="to">to</span> <span word="be">be</span> <span word="cleaned">cleaned</span> 则也为正确答案。 </p><p> </p>
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