动词的数
<p> 1.动词的数是指动词的变化反映主语的单复数变化。</p><p> <span word="I">I</span> <span word="am">am</span> <span word="the">the</span> <span word="best">best</span> <span word="friend">friend</span> <span word="of">of</span> <span word="Tom">Tom</span>.</p><p> 我是汤姆最好的朋友。</p><p> <span word="I">I</span> <span word="am">am</span> <span word="a">a</span> <span word="student">student</span>.</p><p> 我是学生。</p><p> 主语是单数，动词用<span word="BE">BE</span>的第一人称单数形式<span word="am">am</span>.</p><p> <span word="Yes">Yes</span>. <span word="And">And</span> <span word="we">we</span> <span word="both">both</span> <span word="are">are</span> <span word="students">students</span> <span word="of">of</span> <span word="this">this</span> <span word="class">class</span>.</p><p> 是的。而且我们都是这个班的学生。</p><p> <span word="We">We</span> <span word="are">are</span> <span word="students">students</span>.</p><p> 我们是学生。</p><p> 主语是复数，动词用<span word="BE">BE</span>现在式的复数形式<span word="are">are</span>.</p><p> <span word="He">He</span> <span word="speaks">speaks</span> <span word="English">English</span>.</p><p> 他讲英语。</p><p> 主语是第三人称单数，动词用<span word="speak">speak</span>的第三人称单数形式<span word="speaks">speaks</span>.</p><p> 2.第三人称单数动词的简单现在式由原形动词加<span word="s">s</span>构成。</p><p> 规则1：一般动词在原形后面加直接<span word="s">s</span>，如：<span word="arrivearrives">arrivearrives</span>，</p><p> <span word="forgetforgets">forgetforgets</span>，<span word="findfinds">findfinds</span>，<span word="hatehates">hatehates</span>.</p><p> <span word="He">He</span> <span word="likes">likes</span> <span word="chatting">chatting</span> <span word="with">with</span> <span word="me">me</span>.</p><p> 他喜欢和我聊天。</p><p> 规则2：以字母<span word="s">s</span>，<span word="ss">ss</span>，<span word="x">x</span>，<span word="z">z</span>，<span word="sh">sh</span>，<span word="ch">ch</span>等结尾的动词在原形后面加</p><p> <span word="es">es</span>，如：<span word="passpasses">passpasses</span>，<span word="finishfinishes">finishfinishes</span>，<span word="fixfixes">fixfixes</span>，</p><p> <span word="catchcatches">catchcatches</span>，<span word="buzzbuzzes">buzzbuzzes</span>.</p><p> <span word="He">He</span> <span word="passes">passes</span> <span word="them">them</span> <span word="back">back</span> <span word="to">to</span> <span word="me">me</span>.</p><p> 他把它们传回给我。</p><p> 规则3：以字母<span word="o">o</span>结尾的动词在原形后面加<span word="es">es</span>，如：<span word="gogoes">gogoes</span>，</p>
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