如何区分英语过去时态和完成时态
<p> 过去时态表示动作发生在过去，说的是一个过去的事而完成时态是为了解释一个现在的状况而去提一件过去的事，目的是说的是一个现在的事。请比较：</p><p> <span word="I">I</span> <span word="lost">lost</span> <span word="my">my</span> <span word="key">key</span>. 我丢了钥匙。(<span word="lost">lost</span>用的是过去时态，这句话的意思是给你讲一个过去的故事，而说话者眼下也许正在悠闲地喝咖啡)</p><p> <span word="I">I</span> <span word="have">have</span> <span word="lost">lost</span> <span word="my">my</span> <span word="key">key</span>. 我丢了钥匙。(<span word="have">have</span> <span word="lost">lost</span>用的是完成时态，这句话的意思是告诉你一件当前的事，说话者正冻得浑身发抖进不去屋子，打电话求救110帮他把门打开)</p><p> <span word="I">I</span> <span word="have">have</span> <span word="washed">washed</span> <span word="my">my</span> <span word="car">car</span>.我已经洗过我的车了。</p><p> (意思是：我的车现在很干净了，不用再洗了)</p><p> <span word="I">I</span> <span word="have">have</span> <span word="had">had</span> <span word="my">my</span> <span word="lunch">lunch</span>.我已经吃过午饭了。</p><p> (意思是：我现在已经不饿了，你不用再请我吃饭了)</p><p> <span word="I">I</span> <span word="have">have</span> <span word="studied">studied</span> <span word="English">English</span> <span word="for">for</span> 11 <span word="years">years</span>.我学英语已经十一年了。</p><p> (意思是：我学英语已经11年了，很长时间了，不用再学了，或者我已经学了太长时间的英语，我厌烦了，学够了)</p><p> <span word="The">The</span> <span word="students">students</span> <span word="have">have</span> <span word="closed">closed</span> <span word="the">the</span> <span word="door">door</span>.学生们已经关上了门。</p><p> (意思是：我们现在从门肯定是进不去了，得跳窗户了)</p><p> <span word="I">I</span> <span word="have">have</span> <span word="sat">sat</span> <span word="for">for</span> <span word="hours">hours</span> <span word="in">in</span> <span word="the">the</span> <span word="library">library</span>, <span word="reading">reading</span> <span word="a">a</span> <span word="novel">novel</span></p>
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