被动语态
被动语态和主动语态的转换练习
重要程度：7 分
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<h2>被动语态和主动语态的转换练习</h2>
<p>在英语中，主动语态表示主语是动作的执行者，而被动语态则表示主语是动作的承受者。</p>
<p>主动语态变被动语态的基本步骤：</p>
<ol>
<li>将主动句的宾语提到句子的开头作为被动句的主语。</li>
<li>把主动句的动词变成其过去分词形式，并加上助动词be。</li>
<li>根据时态调整助动词be的形式。</li>
<li>删除主动句中的主语（如果主语是人称代词，则通常保留）。</li>
</ol>
<h3>举例说明</h3>
<h4>例题1：将主动语态变为被动语态</h4>
<p><strong>主动语态：</strong> The workers built the bridge last year.</p>
<p><strong>被动语态：</strong> The bridge was built by the workers last year.</p>
<p>解析：原句的宾语"the bridge"变成了新句子的主语，动词"built"变为了"was built"，并将原句的主语"the workers"放在了动词后面。</p>
<h4>例题2：将主动语态变为被动语态</h4>
<p><strong>主动语态：</strong> They will complete the project next month.</p>
<p><strong>被动语态：</strong> The project will be completed by them next month.</p>
<p>解析：原句的宾语"the project"变成了新句子的主语，动词"will complete"变为了"will be completed"，并将原句的主语"they"放在了动词后面。</p>
<h4>例题3：将被动语态变为主动语态</h4>
<p><strong>被动语态：</strong> The book was read by Mary.</p>
<p><strong>主动语态：</strong> Mary read the book.</p>
<p>解析：原句的主语"the book"变回了宾语，动词"was read"变回了"read"，并将原句的主语"Mary"放到了句子开头。</p>
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