2017届高三英语备考复习课件2
<p> 走出误区 1．<span word="can">can</span>表示猜测用于疑问句和否定句，一般不用于肯定句。如果表示理论上的可能</p><p> 性可用于肯定句，用来表达事件或情况可能发生(但并不牵涉到是否会真的发</p><p> 生)，有时可以说明人或事物的特性或一时的特点。 2．<span word="can">can</span>/<span word="may">may</span>/<span word="might">might</span>/<span word="must">must</span> ＋<span word="be">be</span> <span word="doing">doing</span> 表示对正在进行的行为的推测。 3．<span word="ought">ought</span> <span word="to">to</span>/<span word="should">should</span> ＋ <span word="be">be</span> <span word="doing">doing</span> 表示对正在进行的动作的看法。 4．<span word="can">can</span> <span word="not">not</span> <span word="have">have</span> <span word="done">done</span> 表示对过去行为的推测，用于否定句或疑问句，表示怀疑或不</p><p> 肯定。 5．<span word="could">could</span>(<span word="not">not</span>)<span word="have">have</span> <span word="done">done</span> 表示对过去行为的推测，表事实上未实现的行为。 6．<span word="may">may</span> <span word="have">have</span> <span word="done">done</span> 表示对过去行为的推测。 7．<span word="might">might</span> <span word="have">have</span> <span word="done">done</span> 表示本来可能做而实际上没做，有时有抱怨的语气。 8．<span word="must">must</span> <span word="have">have</span> <span word="done">done</span> 表示对过去行为的推测，表示“肯定”“一定”。</p><p> 9．<span word="ought">ought</span> <span word="to">to</span>/<span word="should">should</span> <span word="have">have</span> <span word="done">done</span> 表示本该做而实际上没做到，其否定式表示发生了不</p><p> 该发生的事。 10．<span word="needn">needn</span>’<span word="t">t</span> <span word="have">have</span> <span word="done">done</span> 表示本不必做，而实际上已经做了的行为。</p><p> <span word="You">You</span> <span word="could">could</span> <span word="have">have</span> <span word="done">done</span> <span word="better">better</span>，<span word="but">but</span> <span word="you">you</span> <span word="didn">didn</span>’<span word="t">t</span> <span word="try">try</span> <span word="your">your</span> <span word="best">best</span>.</p><p> 你本能做得更好，但你没有尽力。</p><p> <span word="He">He</span> <span word="can">can</span>’<span word="t">t</span> <span word="have">have</span> <span word="been">been</span> <span word="to">to</span> <span word="Beijing">Beijing</span>，<span word="for">for</span> <span word="he">he</span> <span word="knows">knows</span> <span word="too">too</span> <span word="little">little</span> <span word="about">about</span> <span word="it">it</span>.</p><p> 他不可能去过北京，因为他对它了解太少。</p>
页:
[1]