英语专业四级语法词汇辅导:be+不定式结构
<p> <span word="be">be</span>+不定式结构</p><p> 表示按计划、安排即将发生的动作。例如：</p><p> <span word="Theres">Theres</span> <span word="to">to</span> <span word="be">be</span> <span word="an">an</span> <span word="investigation">investigation</span>.</p><p> <span word="I">I</span> <span word="am">am</span> <span word="to">to</span> <span word="have">have</span> <span word="tea">tea</span> <span word="with">with</span> <span word="Betty">Betty</span> <span word="this">this</span> <span word="afternoon">afternoon</span>.</p><p> 这一结构常见于报纸和广播，用以宣布官方的计划或决定。例如：</p><p> <span word="The">The</span> <span word="Queen">Queen</span> <span word="is">is</span> <span word="to">to</span> <span word="visit">visit</span> <span word="Japan">Japan</span> <span word="next">next</span> <span word="year">year</span>.</p><p> 二是表示命令、禁止或可能性等。例如：</p><p> <span word="You">You</span> <span word="are">are</span> <span word="to">to</span> <span word="stand">stand</span> <span word="here">here</span>. <span word="Do">Do</span> <span word="you">you</span> <span word="understand">understand</span>?</p><p> <span word="Tell">Tell</span> <span word="her">her</span> <span word="shes">shes</span> <span word="not">not</span> <span word="to">to</span> <span word="be">be</span> <span word="back">back</span> <span word="late">late</span>.</p><p> 一般现在时也可表达将来时间，常见于条件状语和时间状语从句。例如：</p><p> <span word="If">If</span> <span word="she">she</span> <span word="comes">comes</span>, <span word="Ill">Ill</span> <span word="tell">tell</span> <span word="her">her</span> <span word="all">all</span> <span word="about">about</span> <span word="it">it</span>.</p><p> <span word="Wait">Wait</span> <span word="here">here</span> <span word="till">till</span> <span word="the">the</span> <span word="meeting">meeting</span> <span word="is">is</span> <span word="over">over</span>.</p><p> <span word="It">It</span> <span word="wont">wont</span> <span word="be">be</span> <span word="long">long</span> <span word="before">before</span> <span word="the">the</span> <span word="rain">rain</span> <span word="stops">stops</span>.</p><p> 近义词辨析</p><p> <span word="begin">begin</span>, <span word="commence">commence</span>, <span word="initiate">initiate</span>, <span word="launch">launch</span>, <span word="start">start</span></p><p> 这组词均含有开始的意思。</p><p> <span word="begin">begin</span></p><p> 在这组词中最常用，泛指开始做某事。但口语中近年来<span word="start">start</span>用得较多。</p><p> <span word="The">The</span> <span word="band">band</span> <span word="began">began</span> <span word="to">to</span> <span word="play">play</span> <span word="joyful">joyful</span> <span word="music">music</span>.乐队开始演奏欢快的音乐。</p><p> <span word="commence">commence</span></p><p> 比<span word="begin">begin</span>用法正式。在宗教或其它仪式及军事用语中人们倾向用<span word="commence">commence</span>.</p><p> <span word="The">The</span> <span word="officer">officer</span> <span word="ordered">ordered</span> <span word="the">the</span> <span word="soldiers">soldiers</span> <span word="to">to</span> <span word="commence">commence</span> <span word="the">the</span> <span word="attack">attack</span>.军官命令士兵开始进攻。</p>
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