初中英语语法几大基本时态讲与练（5）
<p> 过去进行时是表示过去某一时刻或某一时间内正在进行或发生的动作。可以从两个方面来理解：1 过去某一时刻正在进行或发生的动作。<span word="E">E</span>.<span word="g">g</span>. <span word="They">They</span> <span word="were">were</span> <span word="playing">playing</span> <span word="football">football</span> <span word="at">at</span> <span word="ten">ten</span> <span word="oclock">oclock</span> <span word="yesterday">yesterday</span> <span word="morning">morning</span>. <span word="My">My</span> <span word="mother">mother</span> <span word="was">was</span> <span word="cooking">cooking</span> <span word="when">when</span> <span word="I">I</span> <span word="got">got</span> <span word="home">home</span>. <span word="I">I</span> <span word="was">was</span> <span word="washing">washing</span> <span word="my">my</span> <span word="clothes">clothes</span> <span word="at">at</span> <span word="this">this</span> <span word="time">time</span> <span word="yesterday">yesterday</span>. 2 过去某阶段持续进行的动作 <span word="What">What</span> <span word="were">were</span> <span word="you">you</span> <span word="doing">doing</span> <span word="during">during</span> <span word="the">the</span> <span word="holiday">holiday</span>? 另外，在复合句中，若主要动作和背景动作是同时发生的，那么主从句都可用过去进行时<span word="e">e</span>.<span word="g">g</span>. <span word="Jenny">Jenny</span> <span word="was">was</span> <span word="reading">reading</span> <span word="while">while</span> <span word="Danny">Danny</span> <span word="was">was</span> <span word="writing">writing</span>.</p><p> 其结构是助动词<span word="be">be</span>的过去形式<span word="was">was</span>/<span word="were">were</span> +<span word="v">v</span>-<span word="ing">ing</span>.</p><p> 其句式变化仍然要在<span word="be">be</span>上做文章。<span word="E">E</span>.<span word="g">g</span>. <span word="We">We</span> <span word="were">were</span> <span word="working">working</span> <span word="in">in</span> <span word="class">class</span>.</p><p> <span word="We">We</span> <span word="werent">werent</span> <span word="working">working</span> <span word="in">in</span> <span word="class">class</span>. <span word="Were">Were</span> <span word="you">you</span> <span word="working">working</span> <span word="in">in</span> <span word="class">class</span>?</p><p> 过去进行时常与过去某一特定时间的状语连用，如 <span word="last">last</span> <span word="night">night</span>, <span word="at">at</span> <span word="that">that</span> <span word="time">time</span>, <span word="at">at</span> <span word="noon">noon</span> <span word="yesterday">yesterday</span>, <span word="last">last</span> <span word="Sunday">Sunday</span> 等。 也有时没有时间状语，要通过上下文的暗示来确定用过去进行时。<span word="E">E</span>.<span word="g">g</span>. <span word="The">The</span> <span word="students">students</span> <span word="all">all</span> <span word="worked">worked</span> <span word="hard">hard</span>. <span word="Everyone">Everyone</span> <span word="knew">knew</span> <span word="what">what</span> <span word="he">he</span> <span word="was">was</span> <span word="working">working</span> <span word="for">for</span>.</p><p> 做题时常见错误如下：</p><p> 一、易把<span word="be">be</span>+现在分词记成<span word="be">be</span>+过去分词</p><p> 例：<span word="He">He</span> <span word="was">was</span> <span word="talked">talked</span> (<span word="talk">talk</span>) <span word="to">to</span> <span word="his">his</span> <span word="mum">mum</span> <span word="at">at</span> <span word="that">that</span> <span word="time">time</span>.</p><p> 答案：<span word="was">was</span> <span word="talking">talking</span></p><p> 解析：过去进行时与现在进行时结构上的区别体现在<span word="be">be</span>动词上。</p>
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