【expand的用法总结大全】“Expand”是一个非常常见的英语动词,意思是“扩大、扩展、展开、膨胀”等。根据不同的语境,“expand”可以有不同的含义和用法。为了帮助大家更好地掌握这个单词,以下是对“expand”的用法进行系统性的总结,并结合表格形式进行展示。
一、基本含义与常见用法
中文解释 | 英文表达 | 例句 |
扩展、扩大(范围、规模等) | expand a business / knowledge / territory | The company is trying to expand its market. |
展开、伸展(身体或物体) | expand one's arms / body | She expanded her arms to feel the wind. |
膨胀(物理或生理上的) | expand (e.g., a balloon, lungs) | The balloon expands when heated. |
详细说明(内容) | expand on a topic / idea | Please expand on your previous point. |
增强、增强(能力、效果) | expand one's abilities / influence | He expanded his influence in the organization. |
二、词性变化与搭配
词性 | 形式 | 举例 |
动词 | expand | They plan to expand their operations. |
名词 | expansion | The expansion of the city has caused traffic problems. |
过去式 | expanded | The company had expanded into three new countries. |
过去分词 | expanded | The project was expanded last year. |
现在分词 | expanding | The software is expanding its features. |
三、常见搭配短语
搭配 | 含义 | 例句 |
expand on | 详细说明 | She expanded on her views during the meeting. |
expand into | 扩展到(某个领域/地区) | The brand is expanding into the Asian market. |
expand by | 增加(数量、规模等) | Sales have expanded by 20% this year. |
expand one’s horizons | 开阔眼界 | Traveling can help you expand your horizons. |
expand the mind | 激发思维 | Reading books can expand the mind. |
四、使用注意事项
1. 注意主谓一致:当主语是第三人称单数时,动词要加-s。
- 例:He expands his business every year.
2. 区分“expand”与“extend”:
- “expand”更强调“扩大、扩展”(如范围、规模、空间);
- “extend”则更偏向于“延长、延伸”(如时间、距离)。
- 例:We extended the meeting by an hour.(延长)
We expanded our team with new members.(扩大)
3. 避免重复使用:在写作中尽量避免过多重复使用“expand”,可考虑替换为“grow”, “widen”, “broaden”等同义词。
五、拓展学习建议
- 多阅读英文新闻或文章,观察“expand”在不同语境中的使用方式。
- 尝试用“expand”造句,尤其是结合自己的生活经验。
- 利用在线词典(如Oxford、Cambridge)查阅更多例句和搭配。
通过以上总结,我们可以看到“expand”是一个非常实用且多义的动词。掌握它的不同用法,不仅能提升我们的语言表达能力,还能在写作和口语中更加自如地运用。希望这篇总结能对你的英语学习有所帮助!