2014年职称英语考试综合类语法知识讲解：第六讲虚拟语气
<p> 虚拟语气可以粗略地分为两大类：</p><p> 第一类：<span word="should">should</span> 型虚拟式 第二类：<span word="were">were</span> 型虚拟式</p><p> 1.<span word="should">should</span> 型虚拟式：<span word="should">should</span> + 原形动词（往往省去<span word="should">should</span>, 特别是在考试时）</p><p> 这类虚拟式最多用在以下词或句型中：</p><p> （1） <span word="It">It</span> <span word="is">is</span> <span word="necessary">necessary</span> <span word="that">that</span>的主语从句中，如：</p><p> <span word="It">It</span> <span word="is">is</span> <span word="necessary">necessary</span> <span word="that">that</span> <span word="the">the</span> <span word="chief">chief</span> <span word="should">should</span> <span word="be">be</span> <span word="present">present</span> <span word="personally">personally</span> <span word="at">at</span> <span word="the">the</span> <span word="meeting">meeting</span>.（主任有必要亲自参加这次会议。）</p><p> 只要看到<span word="necessary">necessary</span>，马上要想到这是<span word="should">should</span>型虚拟式。</p><p> 记住下面构成<span word="should">should</span>型虚拟式的词：</p><p> <span word="essential">essential</span> （必要的） / <span word="important">important</span>（重要的） / <span word="necessary">necessary</span>（必要的） / <span word="imperative">imperative</span>（迫切的）/ <span word="impossible">impossible</span>（不可能的）/ <span word="natural">natural</span>（自然的）/ <span word="preferable">preferable</span>（更好的）/ <span word="advisable">advisable</span>（合理的）/ <span word="desirable">desirable</span>（理想的）/ <span word="urgent">urgent</span>（紧迫的）/ <span word="incredible">incredible</span>（难以想象的）</p><p> （2） <span word="order">order</span> （命令） / <span word="recommend">recommend</span>（推荐）/ <span word="suggest">suggest</span>（建议）/ <span word="demand">demand</span>（要求） / <span word="command">command</span>（命令）/ <span word="propose">propose</span>（建议）/ <span word="require">require</span>（要求）/ <span word="request">request</span>（请求） / <span word="insist">insist</span>（坚持认为）/ <span word="urge">urge</span>（主张） / <span word="advise">advise</span>（劝告）/ <span word="ask">ask</span>（要求）/ <span word="prefer">prefer</span>（宁愿）/ <span word="desire">desire</span>（愿望）/ <span word="move">move</span>（提议）/ <span word="vote">vote</span>（提议）</p><p> 由这些词构成的宾语从句，主语从句、表语从句、同位语从句或其他有关句型时，都要使用<span word="should">should</span>型虚拟式，例如：</p>
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