以下是英语作文中常用的万能开头句型及适用场景，综合整理如下：
一、引出话题类
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描述现象
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Recently the problem of... has been brought into focus.
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Nowadays there is a growing concern over...
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With the development of... pollution is more and more serious.
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提出问题
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What do you think about...？
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How can we solve...？
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Why is...？
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二、表达观点类
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明确立场
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It can be said with certainty that...
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There is no doubt that...
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Obviously, if we want to do... it is essential that...
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对比分析
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On one hand...
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On the other hand...
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However, we have to look at the other side of the coin...
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三、故事/引用类
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故事引入
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I have a friend who...
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There was a time when...
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As the saying goes...
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权威引用
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A proverb says...
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According to a recent survey...
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As is indicated in the cartoon...
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四、图表/数据类
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数据呈现
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According to the figure/number/statistics...
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The data shows that...
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A bar graph illustrates...
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趋势分析
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The change in... largely results from...
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A number of factors could account for...
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In this respect, we may as well say...
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这些句型可根据作文主题灵活选择，建议结合具体内容调整。写作时注意：
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上文呼应：开头应与后文内容紧密相关，避免跳跃性过大的表述；
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语言规范：优先使用主动语态和高级词汇提升表达；
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文章结构：开头后建议用2-3段展开论述，最后总结观点。