高中英语 语法精讲（Unit 14Festivals）人教版
<p> 语法精讲<span word="Modal">Modal</span> <span word="Verbs">Verbs</span>(2)情态动词—<span word="must">must</span>,<span word="have">have</span> <span word="to">to</span>,<span word="have">have</span> <span word="got">got</span> <span word="to">to</span></p><p> 1.<span word="must">must</span>表示“必须;应该”，是说话人的主观看法。<span word="have">have</span> <span word="to">to</span>表示“必须”“不得不”，表示的是客观需要。<span word="must">must</span>只有一种形式，而<span word="have">have</span> <span word="to">to</span> 有<span word="has">has</span> <span word="to">to</span>、<span word="had">had</span> <span word="to">to</span>、<span word="will">will</span> <span word="have">have</span> <span word="to">to</span>等多种形式。</p><p> <span word="We">We</span> <span word="must">must</span> <span word="keep">keep</span> <span word="steps">steps</span> <span word="to">to</span> <span word="the">the</span> <span word="scientific">scientific</span> <span word="development">development</span>.</p><p> 我们一定要与科学的发展步调一致。</p><p> <span word="He">He</span> <span word="has">has</span> <span word="to">to</span> <span word="be">be</span> <span word="back">back</span> <span word="home">home</span> <span word="by">by</span> <span word="five">five</span> <span word="to">to</span> <span word="fetch">fetch</span> <span word="his">his</span> <span word="son">son</span> <span word="from">from</span> <span word="kindergarten">kindergarten</span>.</p><p> 他必须在5点钟前回家去幼儿园接他儿子。</p><p> 2.<span word="must">must</span>’<span word="t">t</span>表示“不应该” “不许可”“禁止”“不准”。因此在回答<span word="must">must</span>问句时，否定式常用<span word="needn">needn</span>’<span word="t">t</span>或<span word="don">don</span>’ <span word="t">t</span> <span word="have">have</span> <span word="to">to</span>。</p><p> <span word="You">You</span> <span word="must">must</span> <span word="not">not</span> <span word="speak">speak</span> <span word="ill">ill</span> <span word="of">of</span> <span word="others">others</span>.</p><p> 你一定不要说别人的坏话。</p><p> —<span word="Must">Must</span> <span word="I">I</span> <span word="finish">finish</span> <span word="the">the</span> <span word="job">job</span> <span word="before">before</span> <span word="nine">nine</span> <span word="tonight">tonight</span>?</p><p> —<span word="Yes">Yes</span>,<span word="you">you</span> <span word="must">must</span>.</p><p> —<span word="No">No</span>,<span word="you">you</span> <span word="needn">needn</span>’<span word="t">t</span>./<span word="No">No</span>,<span word="you">you</span> <span word="don">don</span>’<span word="t">t</span> <span word="have">have</span> <span word="to">to</span>.</p><p> 3.<span word="have">have</span> <span word="to">to</span>可用<span word="have">have</span> <span word="got">got</span> <span word="to">to</span> 代替。</p><p> 【考例1】2006湖南高考，32<span word="Some">Some</span> <span word="aspects">aspects</span> <span word="of">of</span> <span word="a">a</span> <span word="pilot">pilot</span>’<span word="s">s</span> <span word="job">job</span> ________ <span word="be">be</span> <span word="boring">boring</span>,<span word="and">and</span> <span word="pilots">pilots</span> <span word="often">often</span> ________ <span word="work">work</span> <span word="at">at</span> <span word="inconvenient">inconvenient</span> <span word="hours">hours</span>.</p><p> <span word="A">A</span>.<span word="can">can</span>;<span word="have">have</span> <span word="to">to</span></p><p> <span word="B">B</span>.<span word="may">may</span>;<span word="can">can</span></p><p> <span word="C">C</span>.<span word="have">have</span> <span word="to">to</span>;<span word="may">may</span></p><p> <span word="D">D</span>.<span word="ought">ought</span> <span word="to">to</span>;<span word="must">must</span></p><p> 解析：本题考查情态动词的用法。句意为：“飞行员工作的某些方面可能是令人厌倦的，并且飞行员经常在不方便的时候工作。”第一空表示的是客观的可能性，应用<span word="can">can</span>;而第二空说在不方便的时候还要干，因此表示客观上的必须，用<span word="have">have</span> <span word="to">to</span>,意为“不得不”。</p>
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