按照词性对英语单词进行分类
<p>&<span word="nbsp">nbsp</span>;</p><p> 按照词性可将英语单词分为名词，动词，形容词，数词，量词，代词，介词，副词，连词&<span word="hellip">hellip</span>;&<span word="hellip">hellip</span>;下面主要介绍下动词，名词，形容词，代词，两次及冠词：</p><p> 1、 动词：行为动词、<span word="be">be</span>动词、情态动词。</p><p> (1)行为动词</p><p> 原形、+<span word="s">s</span>/<span word="es">es</span>、+<span word="ed">ed</span>、+<span word="ing">ing</span>，具体判断方法如下：</p><p> (2)<span word="be">be</span>动词</p><p> <span word="a">a</span>、<span word="Am">Am</span>--<span word="was">was</span> <span word="Is">Is</span> --<span word="was">was</span> <span word="Are">Are</span>--<span word="were">were</span> 口诀：我用<span word="am">am</span>, 你用<span word="are">are</span>, <span word="is">is</span>用在他她它，所有复数全用<span word="are">are</span>。</p><p> <span word="b">b</span>、肯定和否定句</p><p> <span word="I">I</span> <span word="am">am</span> (<span word="not">not</span>) <span word="from">from</span> <span word="London">London</span>. <span word="He">He</span> /<span word="She">She</span> <span word="is">is</span>(<span word="not">not</span>) <span word="a">a</span> <span word="teacher">teacher</span>. <span word="My">My</span> <span word="hair">hair</span> <span word="is">is</span>(<span word="not">not</span>) <span word="long">long</span>. <span word="Her">Her</span> <span word="eyes">eyes</span> <span word="are">are</span>(<span word="not">not</span>) <span word="small">small</span>.</p><p> <span word="c">c</span>、 一般疑问句 <span word="Am">Am</span> <span word="I">I</span> &<span word="hellip">hellip</span>;? <span word="Yes">Yes</span>, <span word="you">you</span> <span word="are">are</span>. <span word="No">No</span>, <span word="you">you</span> <span word="aren">aren</span>&<span word="rsquo">rsquo</span>;<span word="t">t</span>. <span word="Are">Are</span> <span word="you">you</span>/<span word="they">they</span>&<span word="hellip">hellip</span>;? <span word="Yes">Yes</span>,<span word="we">we</span>/ <span word="they">they</span> <span word="are">are</span>. <span word="No">No</span>,<span word="we">we</span>/ <span word="they">they</span> <span word="aren">aren</span>&<span word="rsquo">rsquo</span>;<span word="t">t</span>. <span word="Is">Is</span> <span word="the">the</span> <span word="cat">cat</span> <span word="fat">fat</span>? <span word="Yes">Yes</span>, <span word="it">it</span> <span word="is">is</span>. <span word="No">No</span>, <span word="it">it</span> <span word="isn">isn</span>&<span word="rsquo">rsquo</span>;<span word="t">t</span>.</p><p> <span word="is">is</span>、<span word="am">am</span>、<span word="are">are</span>为一类，一般用于一般现在时、现在进行时和一般将来时中。</p><p> <span word="was">was</span>和<span word="were">were</span>为另一类，一般用于一般过去时。</p><p> (3)情态动词</p><p> <span word="can">can</span>、<span word="must">must</span>、<span word="should">should</span>、<span word="would">would</span>、<span word="may">may</span>。情态动词后动词总是用原形。(不受其他任何条件影响)</p><p> 2、 名词</p><p> 这里强调两点：不可数名词都默认为单数，所以总是用<span word="is">is</span>或者<span word="was">was</span>。</p>
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