非谓语动词
非谓语动词的否定式和疑问式
重要程度：6 分
<div>
<h2>非谓语动词的否定式</h2>
<p>非谓语动词的否定形式通常是在非谓语动词前加否定词 <code>not</code>。</p>
<ul>
<li><code>To do</code> 的否定形式是 <code>Not to do</code>。</li>
<li><code>Doing</code> 的否定形式是 <code>Not doing</code>。</li>
<li><code>Done</code> 的否定形式是 <code>Not done</code>。</li>
</ul>
<h3>例题：</h3>
<p>将下列句子转换为否定式：</p>
<ol>
<li><code>I decided to study English harder.</code></li>
<li><code>She enjoys reading books.</code></li>
<li><code>The homework was completed by the students.</code></li>
</ol>
<p>答案：</p>
<ol>
<li><code>I decided not to study English harder.</code></li>
<li><code>She does not enjoy reading books.</code></li>
<li><code>The homework was not completed by the students.</code></li>
</ol>
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<div>
<h2>非谓语动词的疑问式</h2>
<p>非谓语动词的疑问式通常通过在句首添加疑问词或疑问助动词来构成。</p>
<ul>
<li><code>To do</code> 的疑问式可以在句首加 <code>Do</code> 或 <code>Does</code>。</li>
<li><code>Doing</code> 的疑问式可以在句首加 <code>Do</code> 或 <code>Does</code>。</li>
<li><code>Done</code> 的疑问式可以在句首加 <code>Did</code>。</li>
</ul>
<h3>例题：</h3>
<p>将下列句子转换为疑问式：</p>
<ol>
<li><code>He wants to go to the library.</code></li>
<li><code>She is enjoying watching the movie.</code></li>
<li><code>The project has been finished by the team.</code></li>
</ol>
<p>答案：</p>
<ol>
<li><code>Does he want to go to the library?</code></li>
<li><code>Is she enjoying watching the movie?</code></li>
<li><code>Has the project been finished by the team?</code></li>
</ol>
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