💡“时空对比式”句型：Predicting the future is notoriously difficult. Who could have imagined, in [时间], for example, that by the end of [时间], XX would be as common in people's homes as YY? 这个句型用于表达新事物在一段时间内的飞跃式普及，例如AI学习助手在2025年将像词典一样普遍。
🚀 句型特点：该句型强调“过去难以想象”的变化，并用“as common as”构建类比，增强对比感，适用于科技变革、社会发展等话题。
🌱“发展演进式”句型：From those humble beginnings, we have seen the development of XX which are in common use today. 这个句型突出“从微末起步到广泛应用”的演进逻辑，例如高铁的发展正在重塑人们的出行方式。
Predicting the future is notoriously difficult. Who could have imagined, in the mid 1970s, for example, that by the end of the 20th century, computers would be as common in people's homes as TV sets?众所周知，预测未来是非常困难的。举个例子吧，在20世纪70年代中叶又有谁能想得到在20世纪末的时候，家庭用的计算机会像电视机一样普遍?
我们可以从这句话中提炼出一个写作句型：Predicting the future is notoriously difficult. Who could have imagined, in [时间], for example, that by the end of [时间], XX would be as common in people's homes as YY?这是一个典型的“时空对比式”句型，用来表达某个新事物在一段时间内的飞跃式普及，并通过设问引导读者感受“变化之大”。Predicting the future is notoriously difficult：可作为高阶议论文写作的万能句型引入，强调“不确定性”或“转折对比”。Who could have imagined...：强调“过去难以想象”的发展结果，带有惊叹意味。as common as：构建类比句，增强对比感。该句型适用于描写科技变革、社会发展及生活方式转变类话题，适用于以下话题：在科技类议论文中，用于呈现AI、智能手机、可穿戴设备等技术的普及过程；在教育主题写作中，用于描述在线教学的兴起，或AI助教进入课堂的趋势；在社会发展话题中，用于刻画数字支付取代现金、共享经济等新兴现象；在演讲、展示或写作开头，用以引出主题，激发兴趣。下面我们运用这一句型，结合热点话题，仿写几个句子。话题1：AI可将“AI学习助手”与“字典”进行类比，突出AI的迅速发展：
Predicting the future is notoriously difficult. Who could have imagined, in the early 2010s, for example, that by 2025, AI learning assistants would be as common in college students' study routines as dictionaries?预测未来从来都不是易事。在2010年代初谁能想到，到了2025年，人工智能聊天机器人会像词典一样，成为大学生日常学习的一部分？
话题2：支付方式变迁可以设定时间对比（2000s vs 2020s），将“QR codes”和传统的“wallets”进行类比，体现出“扫码支付”的爆发式增长趋势：
Who could have imagined, in the early 2000s, that by the 2020s, scanning QR codes would be as common as using wallets in daily transactions?在2000年代初谁能想到，到了2020年代，扫码支付会像使用钱包一样，成为交易的常态？
这个句子可以用于“科技改变生活方式”话题的写作中。话题3：教育技术、线上学习：过去只有线下课堂，现在线上课程已变主流，将“attending online courses”与“go to school”进行对比，体现出教育技术的迅速发展：
Who could have imagined, in the past, that by now, attending online courses would be as common as going to school physically?在过去谁能想到，今天的在线课程会像线下上学一样普遍？
Who could have imagined, in the 1990s, that by today, driving electric cars would be as common as filling up at gas stations?上世纪90年代谁能想到，到了今天，驾驶电动车会像加油一样常见？
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From those humble beginnings, we have seen the development of the user-friendly home computers and multimedia machines which are in common use today.从那些简陋的初级阶段，我们看到了现在都已普及的、使用简便的家用电脑和多媒体的微机的发展。
从这句话中我们可以提炼出一个写作句型：From those humble beginnings, we have seen the development of XX which are in common use today.该句型突出“从微末起步到广泛应用”的演进逻辑，兼具历史纵深感与现实成就感，不仅呈现出翻天覆地的变化，也强调了成果的普及性。humble beginnings：可以是“原始形态、初代版本、原型探索”等，常用表达起步阶段。we have seen the development of...：以群体视角，强调新事物的发展。in common use today：强调现今普及程度。可用于主体段或举例段，作为论证展开的重要支点，适用于以下话题：呈现某项技术或现象的发展历程，如手机、互联网、人工智能、在线教育等；描写时代变迁对个体与社会的影响，或生活方式的演变；置于主体段开头，引出具体实例或论据。下面我们运用这一句型，结合热点话题，仿写几个句子。话题1：交通工具从一开始的绿皮车到现在的高铁，出行方式已经发生了翻天覆地的变化。在描述交通/基础设施进步时，用这个句式开头，既有纵深感，又方便接出影响：
From those humble beginnings, we have seen the development of high-speed railways which are now reshaping the way people travel across the country.从最初的起步阶段，我们见证了高铁的发展，如今正在重塑人们的出行方式。
From those humble beginnings, we have seen the development of environmental campaigns which now influence consumer behavior and corporate decisions.从最初的起步阶段，我们见证了环保行动的推进，如今已深刻影响消费者行为和企业决策。
From its humble beginnings, we have seen the development of mental health awareness which is now a regular part of school education and public discourse.从最初的起步阶段，我们见证了心理健康意识的提升，如今已成为校园教育和公共讨论的常见议题。
