英语语法大全：过去完成时
<p> 【导语】英语语法让很多学生都头疼，因为复杂难懂的句式和词组有时难以记忆。英语网为大家整理了小学英语语法大全，希望对同学们的英语语法学习有所帮助。更多内容尽在英语网。</p><p> 过去完成时：表示发生在过去的两个动作在前的那一个，它表示句子中描述的动作发生在过去的过去。</p><p> 基本形式：过去完成时由<span word="had">had</span>+过去分词构成，因此无人称变化</p><p> 肯定式：<span word="I">I</span> <span word="had">had</span>/<span word="Id">Id</span> <span word="worked">worked</span>等</p><p> 否定式：<span word="I">I</span> <span word="had">had</span> <span word="not">not</span>/<span word="hadnt">hadnt</span> <span word="worked">worked</span>等</p><p> 疑问式：<span word="had">had</span> <span word="I">I</span> <span word="worked">worked</span>等</p><p> 否定疑问式：<span word="had">had</span> <span word="I">I</span> <span word="not">not</span>/<span word="hadnt">hadnt</span> <span word="I">I</span> <span word="worked">worked</span>等</p><p> 时态用法：</p><p> 1. 过去完成时是与现在完成时相当的过去式：</p><p> 现在完成时：<span word="Ann">Ann</span> <span word="has">has</span> <span word="just">just</span> <span word="left">left</span>.<span word="If">If</span> <span word="you">you</span> <span word="hurry">hurry</span> <span word="youll">youll</span> <span word="catch">catch</span> <span word="her">her</span>.(安刚刚走。如果你快一点，就能追上她。)</p><p> 过去完成时：<span word="When">When</span> <span word="I">I</span> <span word="arrived">arrived</span> <span word="Ann">Ann</span> <span word="had">had</span> <span word="just">just</span> <span word="left">left</span>.(我到的时候，安刚刚离开。)</p><p> 但是，过去完成时不像现在完成时那样限于表达未指明时间的动作，因此可以说：<span word="He">He</span> <span word="had">had</span> <span word="left">left</span> <span word="his">his</span> <span word="case">case</span> <span word="on">on</span> <span word="the">the</span> 4∶40 <span word="train">train</span>.(他把手提箱丢在4点40分的火车上了。)</p><p> 2.现在完成时可以和 <span word="since">since</span>/<span word="for">for</span>/<span word="always">always</span>等词连用，表示一个开始于过去并仍在继续或刚刚结束的动：</p>
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