在准备考研英语二时，重点背诵的句子类型通常包括以下几种：
1. 高频词汇短语：如 "as long as"、"in order to"、"on the one hand" 等。
2. 经典句型：如 "not only...but also..."、"there is no doubt that..."、"in my opinion" 等。
3. 篇章连接词：如 "however"、"furthermore"、"in conclusion" 等。
4. 修辞手法运用句：如比喻、排比等，增强文章表达效果。
5. 逻辑推理句：如 "it can be concluded that..."、"therefore" 等。
以下是一些具体的句子示例：
- "The rapid development of technology has brought about significant changes in our daily lives."
- "It is widely believed that education plays a crucial role in shaping an individual's future."
- "On the one hand, the internet has made information more accessible; on the other hand, it has raised concerns about privacy and security."
- "In conclusion, while there are challenges, the benefits of online learning far outweigh the drawbacks."
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