Extend和expand都是英语单词,它们的意思都是 “扩展、延伸”,但它们的用法和语义略微有些不同,因此我们需要区分记忆。
首先,extend是一个动词,常常意味着向外延伸或扩大某个事物的范围、长度、时间等等。例如:- The company decided to extend its sales promotion campaign for another month.(公司决定将其销售促销活动延长一个月。)- Please extend your legs and place your feet on the floor.(请把你的腿延伸开,脚放在地板上。)- We would like to extend our heartfelt thanks to all of you for your support.(我们想向大家表示由衷的感谢,感谢你们的支持。)而expand通常是描述某个事物被扩大或涵盖更多的内容。例如:- The business plan calls for expanding into new markets within the next year.(这个商业计划要求在未来一年内拓展新市场。)- The city has plans to expand its public transportation system.(这座城市计划扩展其公共交通系统。)- His knowledge of history has expanded greatly since he began reading more.(自从开始阅读更多以来,他对历史的了解大大扩展了。)总之,记忆extend通常是指“延伸、伸出”,而expand通常是指“扩大、增加、拓展”。