2016年中考英语词组辨析：if/ whether
<p> Ⅰ.都有“是否”之意。在某种情况下右互换。如：</p><p> ① <span word="I">I</span> <span word="don">don</span>’<span word="t">t</span> <span word="know">know</span> <span word="if">if</span> / <span word="whether">whether</span> <span word="he">he</span>’<span word="ll">ll</span> <span word="come">come</span> <span word="tomorrow">tomorrow</span>. 我不知道明天他是否来。</p><p> Ⅱ. 但在下列6种情况下<span word="if">if</span> 不能替换<span word="whether">whether</span>:</p><p> 1. 正式文体中，句中有<span word="or">or</span> <span word="not">not</span>时。如：</p><p> <span word="I">I</span> <span word="wonder">wonder</span> <span word="whether">whether</span> <span word="it">it</span> <span word="is">is</span> <span word="big">big</span> <span word="enough">enough</span> <span word="or">or</span> <span word="not">not</span>. 我不知道它是否够大。</p><p> 2.引导主语、表语、同位语从句时。如：</p><p> <span word="Whether">Whether</span> <span word="it">it</span> <span word="is">is</span> <span word="true">true</span>(<span word="or">or</span> <span word="not">not</span>) <span word="is">is</span> <span word="still">still</span> <span word="a">a</span> <span word="question">question</span>. 它是不是真的还是一个问题。</p><p> 3. 作介词宾语时，如：</p><p> <span word="I">I</span> <span word="haven">haven</span>’<span word="t">t</span> <span word="decided">decided</span> <span word="the">the</span> <span word="quwstion">quwstion</span> <span word="of">of</span> <span word="whether">whether</span> <span word="I">I</span>’<span word="ll">ll</span> <span word="go">go</span> <span word="back">back</span> <span word="home">home</span>. 我还未决定是否要回家去。</p><p> 4. 放在不定式前，与不定式组成词组。如：</p><p> <span word="Li">Li</span> <span word="Lei">Lei</span> <span word="hasn">hasn</span>’<span word="t">t</span> <span word="decided">decided</span> <span word="whether">whether</span> <span word="to">to</span> <span word="go">go</span> <span word="or">or</span> <span word="not">not</span>. 李雷还未决定去还是不去。</p><p> 5. 作<span word="discuss">discuss</span>等词的宾语时，如：</p><p> <span word="They">They</span> <span word="discuss">discuss</span> <span word="whether">whether</span> <span word="they">they</span> <span word="should">should</span> <span word="close">close</span> <span word="the">the</span> <span word="shop">shop</span>. 他们讲座是否该关闭那家商店。</p><p> 6. 引导的从句放在句首时。如：</p><p> <span word="Whether">Whether</span> <span word="this">this</span> <span word="is">is</span> <span word="true">true</span> <span word="or">or</span> <span word="not">not</span>, <span word="I">I</span> <span word="cannot">cannot</span> <span word="say">say</span>.这件事是否真实我说不上。</p><p> Ⅲ. <span word="if">if</span> 还有连词的功能，意为“如果”引导条件状语从句;而<span word="whether">whether</span>另有“不管，无论”之意，引导让步状语从句。如：</p>
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