英语语法感叹句知识点：感叹句与形式主语it
<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> 在通常情况下，我们会用形式主语<span word="it">it</span>代替主语从句放在句首，而将主语从句放在句末，以避免句子头重脚轻。如：</p><p> <span word="That">That</span> <span word="we">we</span> <span word="shall">shall</span> <span word="be">be</span> <span word="late">late</span> <span word="is">is</span> <span word="certain">certain</span>.</p><p> 我们要晚了，这是确定无疑的。</p><p> =<span word="It">It</span> <span word="is">is</span> <span word="certain">certain</span> <span word="that">that</span> <span word="we">we</span> <span word="shall">shall</span> <span word="be">be</span> <span word="late">late</span>.</p><p> 我们肯定要迟到了。</p><p> <span word="What">What</span> <span word="she">she</span> <span word="did">did</span> <span word="is">is</span> <span word="not">not</span> <span word="yet">yet</span> <span word="known">known</span>.</p><p> 她干了什么尚不清楚。</p><p> =<span word="Its">Its</span> <span word="not">not</span> <span word="yet">yet</span> <span word="known">known</span> <span word="what">what</span> <span word="she">she</span> <span word="did">did</span>.</p><p> 她做什么还不得而知。</p><p> 但是，如果如是感叹句，则必须用形式主语<span word="it">it</span>。如：</p><p> <span word="How">How</span> <span word="strange">strange</span> <span word="it">it</span> <span word="is">is</span> <span word="that">that</span> <span word="the">the</span> <span word="children">children</span> <span word="are">are</span> <span word="so">so</span> <span word="quiet">quiet</span>!</p><p> 真奇怪，孩子们如此安静!</p>
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