小学五年级英语语法：祈使句的使用
<p>&<span word="nbsp">nbsp</span>;</p><p> 祈使句即表示要求或者命令别人做某事或者不要做某事，常用的有肯定句和否定句两种，把祈使句改为否定句只需在动词前加<span word="don">don</span>'<span word="t">t</span>即可。</p><p> 肯定式：以动词原形开头(有时有<span word="please">please</span>)</p><p> 例句：</p><p> <span word="Be">Be</span> <span word="careful">careful</span>!</p><p> <span word="Please">Please</span> <span word="open">open</span> <span word="your">your</span> <span word="books">books</span>.</p><p> <span word="Let">Let</span> <span word="me">me</span> <span word="have">have</span> <span word="a">a</span> <span word="try">try</span>.</p><p> 否定式：<span word="don">don</span>'<span word="t">t</span>+动词原形开头(有时有<span word="please">please</span>)</p><p> 例句：</p><p> <span word="Don">Don</span>&<span word="rsquo">rsquo</span>;<span word="t">t</span> <span word="open">open</span> <span word="the">the</span> <span word="door">door</span>.</p>
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