英语讲义【7】不定冠词a/an的用法
<p> 前此说过了定冠词的常见用法，意犹未尽。本文就来谈谈不定冠词（<span word="indefinite">indefinite</span> <span word="articles">articles</span>） <span word="a">a</span>/<span word="an">an</span> 的用法。</p><p> 不定冠词最基本的用途就是用来表示一这概念，如：</p><p> ① <span word="A">A</span> <span word="stitch">stitch</span> <span word="in">in</span> <span word="time">time</span> <span word="saves">saves</span> <span word="nine">nine</span>.</p><p> ② <span word="Jason">Jason</span> <span word="is">is</span> <span word="an">an</span> <span word="internationally">internationally</span> <span word="known">known</span> <span word="scholar">scholar</span>.</p><p> 此外，<span word="a">a</span>/<span word="an">an</span> 还有下列 6 种用途：</p><p> ㈠常和<span word="time">time</span>、<span word="measurement">measurement</span>等有关的名词连用，以表示每 的概念，如：</p><p> ③ <span word="I">I</span> <span word="teach">teach</span> <span word="five">five</span> <span word="days">days</span> <span word="a">a</span> <span word="week">week</span>.</p><p> ④ <span word="This">This</span> <span word="type">type</span> <span word="of">of</span> <span word="vegetables">vegetables</span> <span word="is">is</span> <span word="sold">sold</span> <span word="at">at</span> <span word="one">one</span> <span word="dollar">dollar</span> <span word="a">a</span> <span word="kilo">kilo</span>.</p><p> ⑤ <span word="My">My</span> <span word="car">car</span> <span word="usually">usually</span> <span word="runs">runs</span> <span word="sixty">sixty</span> <span word="kilometres">kilometres</span> <span word="an">an</span> <span word="hour">hour</span>.</p><p> ㈡常和 <span word="hundred">hundred</span>, <span word="thousand">thousand</span>, <span word="dozen">dozen</span> 以及数目及数量连用，如：</p><p> ⑥ <span word="That">That</span> <span word="factory">factory</span> <span word="turns">turns</span> <span word="out">out</span> <span word="at">at</span> <span word="least">least</span> <span word="a">a</span> <span word="hundred">hundred</span> <span word="tyres">tyres</span> <span word="a">a</span> <span word="day">day</span>.</p><p> ⑦ <span word="Noels">Noels</span> <span word="monthly">monthly</span> <span word="salary">salary</span> <span word="is">is</span> <span word="a">a</span> <span word="thousand">thousand</span> <span word="dollars">dollars</span>.</p><p> ⑧ <span word="I">I</span> <span word="have">have</span> <span word="a">a</span> <span word="number">number</span> <span word="of">of</span> <span word="sponsored">sponsored</span> <span word="students">students</span>.</p><p> ⑨ <span word="Mary">Mary</span> <span word="has">has</span> <span word="a">a</span> <span word="lot">lot</span> <span word="of">of</span> <span word="money">money</span>.</p><p> ㈢在<span word="of">of</span> / <span word="at">at</span>后面出现，以表示同一类这概念，如：</p><p> ⑩ <span word="Birds">Birds</span> <span word="of">of</span> <span word="a">a</span> <span word="feather">feather</span> <span word="flock">flock</span> <span word="together">together</span>.</p><p> 11. <span word="Please">Please</span> <span word="come">come</span> <span word="one">one</span> <span word="at">at</span> <span word="a">a</span> <span word="time">time</span>.</p><p> 12. <span word="Things">Things</span> <span word="of">of</span> <span word="a">a</span> <span word="kind">kind</span> <span word="come">come</span> <span word="together">together</span>, <span word="so">so</span> <span word="do">do</span> <span word="people">people</span> <span word="of">of</span> <span word="a">a</span> <span word="mind">mind</span>.</p><p> ㈣常在<span word="rather">rather</span>, <span word="quite">quite</span>, <span word="many">many</span>, <span word="half">half</span>, <span word="what">what</span>, <span word="such">such</span>等字后面出现，形成固定用法，如：</p><p> 13. <span word="Tom">Tom</span> <span word="is">is</span> <span word="rather">rather</span> <span word="a">a</span> <span word="fool">fool</span>.</p>
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