状语从句知识点总结：as引导时间状语从句的谓语特点
<p>【导语】英语语法让很多学生都头疼，因为复杂难懂的句式和词组有时难以记忆。英语网为大家整理了英语语法大全，希望对同学们的英语语法学习有所帮助。更多内容尽在英语网。</p><p>■<span word="as">as</span> 引导时间状语从句表示当的时候在期间时，该从句的谓语通常是那些表示动作意义的动词，而不能是<span word="be">be</span>(是、在), <span word="have">have</span>(有)，<span word="like">like</span>(喜欢)，<span word="belong">belong</span>(属于)等表示状态或静态意义的动词。</p><p>我打算去邮局。当你在邮局的时候，请帮我买几张邮票好吗?</p><p>误：<span word="Im">Im</span> <span word="going">going</span> <span word="to">to</span> <span word="the">the</span> <span word="post">post</span> <span word="office">office</span>.<span word="As">As</span> <span word="you">you</span> <span word="are">are</span> <span word="there">there</span>, <span word="can">can</span> <span word="you">you</span> <span word="get">get</span> <span word="me">me</span> <span word="some">some</span> <span word="stamps">stamps</span>?</p><p>正：<span word="Im">Im</span> <span word="going">going</span> <span word="to">to</span> <span word="the">the</span> <span word="post">post</span> <span word="office">office</span>.<span word="While">While</span> <span word="you">you</span> <span word="are">are</span> <span word="there">there</span>, <span word="can">can</span> <span word="you">you</span> <span word="get">get</span> <span word="me">me</span> <span word="some">some</span> <span word="stamps">stamps</span>?</p><p>■正因为 <span word="as">as</span> 引导时间状语从句表示当的时候在期间时，从句的谓语不能是表示状态或静态意义的动词，所以当下面第一句变为第二句这样的状语从句时，不能再用 <span word="as">as</span>，而应用 <span word="when">when</span>：</p><p><span word="As">As</span> <span word="a">a</span> <span word="student">student</span> <span word="he">he</span> <span word="had">had</span> <span word="known">known</span> <span word="great">great</span> <span word="poverty">poverty</span>.</p><p>=<span word="When">When</span> <span word="he">he</span> <span word="was">was</span> <span word="a">a</span> <span word="student">student</span> <span word="he">he</span> <span word="had">had</span> <span word="known">known</span> <span word="great">great</span> <span word="poverty">poverty</span>. 他当学生时，经历过很贫困的生活。</p><p>■但是，当 <span word="as">as</span> 引导原因状语从句时，其谓语动词可以是状态或静态动词。如：</p><p><span word="As">As</span> <span word="there">there</span> <span word="was">was</span> <span word="very">very</span> <span word="little">little</span> <span word="support">support</span>, <span word="the">the</span> <span word="strike">strike</span> <span word="was">was</span> <span word="not">not</span> <span word="successful">successful</span>. 由于支持的很少，罢工未获成功。</p>
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