［动词不定式］不定式的时态和语态
<p> 1） 一般式表示的动词，有时与谓语动词表示的动作同时发生，有时发生在谓语动词的动作之后，例如</p><p> <span word="He">He</span> <span word="seems">seems</span> <span word="to">to</span> <span word="know">know</span> <span word="this">this</span>. 他似乎知道这事。</p><p> <span word="I">I</span> <span word="hope">hope</span> <span word="to">to</span> <span word="see">see</span> <span word="you">you</span> <span word="again">again</span>. = <span word="I">I</span> <span word="hope">hope</span> <span word="that">that</span> <span word="Ill">Ill</span> <span word="see">see</span> <span word="you">you</span> <span word="again">again</span>. 我希望再见到你。</p><p> 2） 完成式表示的动作发生在谓语动词表示的动作之前。例如：</p><p> <span word="Im">Im</span> <span word="sorry">sorry</span> <span word="to">to</span> <span word="have">have</span> <span word="given">given</span> <span word="you">you</span> <span word="so">so</span> <span word="much">much</span> <span word="trouble">trouble</span>. 很抱歉，给你添了那么多的麻烦。</p><p> <span word="He">He</span> <span word="seems">seems</span> <span word="to">to</span> <span word="have">have</span> <span word="caught">caught</span> <span word="a">a</span> <span word="cold">cold</span>. 他好像已经得了感冒。</p><p> 3） 进行式表示动作正在进行，与谓语动词表示的动作同时发生。例如：</p><p> <span word="He">He</span> <span word="seems">seems</span> <span word="to">to</span> <span word="be">be</span> <span word="eating">eating</span> <span word="something">something</span>. 他好像正在吃什么东西。</p><p> 4） 完成进行式表示动作从过去开始并延续至说话的时候。例如：</p><p> <span word="She">She</span> <span word="is">is</span> <span word="known">known</span> <span word="to">to</span> <span word="have">have</span> <span word="been">been</span> <span word="working">working</span> <span word="on">on</span> <span word="the">the</span> <span word="problem">problem</span> <span word="for">for</span> <span word="many">many</span> <span word="years">years</span>. 我们知道她研究这问题有好几年了。</p><p> </p>
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