初中英语动词不定式讲解试题和答案
<p> 一、作主语，可以用<span word="it">it</span>代替，<span word="it">it</span>叫形式主语，动词不定式放在后面叫真正主语</p><p> 1．<span word="To">To</span> <span word="learn">learn</span> <span word="a">a</span> <span word="foreign">foreign</span> <span word="language">language</span> <span word="is">is</span> <span word="not">not</span> <span word="easy">easy</span>.</p><p> <span word="It">It</span> <span word="is">is</span> <span word="not">not</span> <span word="easy">easy</span> <span word="to">to</span> <span word="learn">learn</span> <span word="a">a</span> <span word="foreign">foreign</span> <span word="language">language</span>.</p><p> 2. <span word="Its">Its</span> <span word="dangerous">dangerous</span> <span word="to">to</span> <span word="drive">drive</span> <span word="very">very</span> <span word="fast">fast</span>.</p><p> 二、作表语</p><p> <span word="My">My</span> <span word="idea">idea</span> <span word="is">is</span> <span word="to">to</span> <span word="ring">ring</span> <span word="him">him</span> <span word="up">up</span> <span word="at">at</span> <span word="once">once</span>. 我的想法是马上给他打电话。</p><p> 如果主语部分含实义动词<span word="do">do</span>，且作表语的动词又是<span word="do">do</span>的内容，这时表语不定式的<span word="to">to</span>可以省略。如：<span word="All">All</span> <span word="I">I</span> <span word="did">did</span> <span word="was">was</span> <span word="wait">wait</span> <span word="here">here</span>. 我能做的就是在这里等。</p><p> 三、常可接动词不定式作宾语的动词有：<span word="agree">agree</span>(同意), <span word="hope">hope</span>(希望), <span word="decide">decide</span>(决定), <span word="need">need</span>(需要), <span word="mean">mean</span>(打算), <span word="wish">wish</span>(希望), <span word="fail">fail</span>(失败), <span word="want">want</span>(想要), <span word="begin">begin</span>(开始), <span word="would">would</span> <span word="like">like</span>(想要)等。</p><p> <span word="He">He</span> <span word="has">has</span> <span word="decided">decided</span> <span word="to">to</span> <span word="go">go</span> <span word="to">to</span> <span word="the">the</span> <span word="countryside">countryside</span>. 他已决心去乡下。</p><p> 四、疑问词 + 动词不定式结构可以作动词<span word="know">know</span>、<span word="think">think</span>、<span word="find">find</span> <span word="out">out</span>等的宾语。</p><p> <span word="I">I</span> <span word="dont">dont</span> <span word="know">know</span> <span word="who">who</span> <span word="to">to</span> <span word="ask">ask</span>. 我真不知道该问谁。</p><p> 五、疑问词 + 动词不定式可以作动词<span word="show">show</span>、<span word="teach">teach</span>、<span word="ask">ask</span>等后面的直接宾语。</p><p> <span word="She">She</span> <span word="told">told</span> <span word="me">me</span> <span word="where">where</span> <span word="to">to</span> <span word="find">find</span> <span word="the">the</span> <span word="earphone">earphone</span>. 她告诉我什么地方可以找到耳机。</p><p> 六、如果宾语太长，可用<span word="it">it</span>作形式宾语，构成主语 + 谓语 + <span word="it">it</span> + 宾语不足语(名词或形容词) + <span word="to">to</span> <span word="do">do</span> <span word="sth">sth</span>结构，谓语动词常为<span word="find">find</span>、<span word="think">think</span>、<span word="feel">feel</span>等。</p>
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