2016届高三英语二轮复习课件：专题1 语法 板块2 第3讲 情态动词和虚拟语气
<p> 类别 从句谓语动词 主句谓语动词 与现在事实相反 过去式(<span word="be">be</span>用<span word="were">were</span>) <span word="should">should</span>/<span word="would">would</span>/<span word="could">could</span>/</p><p> <span word="might">might</span>＋动词原形 与过去事实相反 <span word="had">had</span>＋过去分词 <span word="should">should</span>/<span word="would">would</span>/<span word="could">could</span>/<span word="might">might</span>＋<span word="have">have</span>＋过去分词 与将来 事实相反 过去式(<span word="be">be</span>用<span word="were">were</span>) <span word="should">should</span>/<span word="would">would</span>/<span word="could">could</span>/<span word="might">might</span>＋动词原形 <span word="should">should</span>＋动词原形</p><p> <span word="were">were</span> <span word="to">to</span>＋动词原形 类别 从句谓语动词 主句谓语动词 <span word="if">if</span>省 略句 如果虚拟条件句中含有<span word="were">were</span>/<span word="had">had</span>/<span word="should">should</span>，有时可把<span word="if">if</span>省略，把<span word="were">were</span>/<span word="had">had</span>/<span word="should">should</span>提到主语之前形成倒装，若为否定形式，<span word="not">not</span>不可提前。 混合条件句 有时条件句的动作与主句动作发生的时间不一致，这时动词的形式应根据它们各自表示的时间加以调整。 含蓄条件句 ①有时假设的情况不用条件从句表达，而是用<span word="but">but</span> <span word="for">for</span>，<span word="without">without</span>等介词(短语)或上下文来表示条件。 ②用连词<span word="otherwise">otherwise</span>，<span word="or">or</span>等暗示后文与前面的情况相 反，从而引出后文的虚拟语气。 ③虚拟条件通过<span word="but">but</span>暗示出来，模式为“虚拟情况＋<span word="but">but</span>＋真实情况”。 与现在事实相反 从句用一般过去时 与过去事实相反 从句用过去完成时 与将来事实相反 从句用<span word="would">would</span>/<span word="could">could</span>＋动词原形 情态动词＋<span word="have">have</span> <span word="done">done</span> 用法 <span word="must">must</span> <span word="have">have</span> <span word="done">done</span> 一定做过某事，其否定形式为<span word="can">can</span>’<span word="t">t</span>/<span word="couldn">couldn</span>’<span word="t">t</span> <span word="have">have</span> <span word="done">done</span> <span word="can">can</span>/<span word="could">could</span> <span word="have">have</span> <span word="done">done</span> ①本来能够做但却未做 ②可能做过某事 <span word="can">can</span>’<span word="t">t</span>/<span word="couldn">couldn</span>’<span word="t">t</span> <span word="have">have</span> <span word="done">done</span> 不可能做过某事 <span word="may">may</span>/<span word="might">might</span> <span word="have">have</span> <span word="done">done</span> 或许/可能做过某事 <span word="should">should</span>/<span word="ought">ought</span> <span word="to">to</span> <span word="have">have</span> <span word="done">done</span> 本该做但却未做，其否定形式表示本不该做但却做了 <span word="needn">needn</span>’<span word="t">t</span> <span word="have">have</span> <span word="done">done</span> 做了本没有必要做的事情</p>
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