✨转折/对比类
逻辑作用：用于引出相反观点、对立情况，梳理行文逻辑
核心副词/短语：
**but 但是
例句：I've heard rumors about the new project, but nothing definite has been confirmed.
翻译：我听到了关于新项目的传闻，但没有确定的消息得到证实。
**however 然而；不过
例句：I wanted to attend the graduation ceremony. However, I caught a bad flu and had to stay in hospital.
翻译：我想去参加毕业典礼，但是我得了重流感不得不住院。
**nevertheless / nonetheless 尽管如此；不过
例句：The experiment result is not perfect; nevertheless, it still gives us valuable experience.
翻译：实验结果并不完美，尽管如此，它还是给我们提供了宝贵的经验。
**while / whereas 而（用于两者对比）
例句：Some of the studies show positive effects of the new policy, while/whereas others show negative influences.
翻译：部分研究显示新政策有积极效果，然而其他研究显示它存在负面影响。
**on the contrary 相反地
例句：I do not thinkthis method is useless. On the contrary, it can help us save a lot of time.
翻译：我认为这个方法并非没用，相反，它能帮我们节省大量时间。
**by contrast 相比之下
例句：In the past, people mainly relied on manual labor for production. By contrast, modern production relies more on digital technology.
翻译：过去人们生产主要依靠体力劳动，相比之下，现代生产更多依赖数字技术。
**even though 尽管
例句：Even though he disagreed with my opinion on environmental protection, he still listened to me patiently.
翻译：尽管他不赞同我关于环境保护的观点，他还是耐心听完了我的发言。
**conversely 相反地
用于明确引出对立观点，比on the contrary更正式：
例句：Some people believe higher scores mean stronger ability; conversely, many high scorers lack practical problem-solving skills.
翻译：有人认为分数越高能力越强，相反，很多高分者缺乏实际解决问题的能力。
**alternatively 或者；作为替代
用于提供另一种选择，议论文中拓展观点非常实用：
例句：You can take the subway to the exhibition hall; alternatively, you can ride a shared bike to enjoy the scenery along the road.
翻译：你可以坐地铁去展馆，或者你也可以骑共享单车欣赏沿途风景。
**admittedly 诚然；无可否认地
用于让步转折，先承认对方观点，再引出自己的论点，适合议论文写作：
例句：Admittedly, online learning is very convenient; however, it cannot replace the interaction between teachers and students in offline classes.
翻译：诚然，线上学习非常方便，但它无法取代线下课堂中师生之间的互动。
**likewise 同样地；也
用于类比相似情况，比similarly更高级：
例句：Watching English movies can improve our listening ability; likewise, reading English novels can help expand our vocabulary.
翻译：看英语电影能提升听力，同样，读英文小说能帮助我们拓展词汇量。
**by comparison 比较起来；相比之下
例句：By comparison, electric vehicles are more environmentally friendly than traditional fuel vehicles.
翻译：相比之下，电动车比传统燃油车更环保。
✨因果关系类
逻辑作用：明确原因和结果的对应关系，符合英语表达逻辑习惯
（一）表原因：
**because 因为（接从句）
例句：I started to cry because I cut my finger when peeling the apple.
翻译：我切苹果的时候割破了手指，所以哭了出来。
**because of 由于（接名词/名词短语）
例句：She missed the train because of her oversleeping in the morning.
翻译：因为早上睡过头，她错过了火车。
**due to 由于（接名词/名词短语）
例句：The delay of the flight was due to the sudden heavy rain in the mountain area.
翻译：航班延误是因为山区突发暴雨。
**owing to 由于（接名词/名词短语）
例句：Owing to the joint efforts of the whole team, we finished the project ahead of schedule.
翻译：因为整个团队的共同努力，我们提前完成了项目。
**thanks to 多亏；由于（多用于积极原因）
例句：Thanks to the promotion of mobile libraries, people in remote villages can still borrow new books.
翻译：多亏了流动图书馆的推广，偏远村庄的人们依然可以读到新书。
**since / as 因为（接从句，语气比because更委婉）
例句：Since you have finished all your homework, you can go out to play basketball with your friends.
翻译：既然你已经完成了所有作业，你可以出去和朋友们打篮球了。
**in light of 考虑到；鉴于（正式短语，翻译/议论文常用）
例句：In light of the current situation, the local government has adjusted the policy of tourist attractions opening.
翻译：鉴于目前的情况，当地政府调整了景区开放政策。
**given that 考虑到；鉴于（接从句）
例句：Given that the exam is approaching, we need to prioritize the review of core knowledge points.
翻译：考虑到考试临近，我们需要优先复习核心知识点。
**be attributed to 归因于（高级短语，常用于观点论证）
例句：The rapid development of China's digital economy can be attributed to the popularization of Internet technology.
翻译：中国数字经济的快速发展可以归因于互联网技术的普及。
**account for 解释；导致（动词短语）
例句：The increasing demand for healthy food accounts for the rapid growth of the organic food market.
翻译：人们对健康食品日益增长的需求导致了有机食品市场的快速增长。
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