leaf英语是什么
一、leaf作为名词的核心含义与用法
1. 基础释义:树叶、叶片
这是leaf最常见的含义,指植物的叶子。比如:
- The wind blew a leaf off the tree.(风吹落了树上一片叶子。)
- Maple leaves turn red in autumn.(枫叶在秋天变红。) 它的复数形式有两种:leaves(常规复数)和leafs(用于特殊语境,比如机械的叶片、茶叶等固定表达中相对少见)。
2. 引申含义:(书、纸张等的)一页
除了植物叶片,leaf还可以表示纸张、书籍的一页,通常指有文字或内容的单页。例如:
- She turned the leaf of the notebook and began writing.(她翻过笔记本的一页,开始书写。)
- The old book had yellowed leaves.(这本旧书的书页已经泛黄。)
3. 特殊领域释义:机械、技术领域的"叶片"
在工程、机械语境中,leaf指代机械设备上类似叶片的部件。比如:
- turbine leaf(涡轮叶片)
- leaf spring(汽车的板簧,由多片钢板组成,类似叶片结构)
二、leaf作为动词的用法
leaf作动词时,发音不变,主要有以下两种含义:
1. 翻书、浏览
表示快速翻动书籍、杂志等的书页,常和through搭配。例如:
- He was leafing through a magazine while waiting.(他等待时正在浏览一本杂志。)
- She leafed through the photo album, recalling old memories.(她翻着相册,回忆起往日的时光。)
2. 长叶、生叶
表示植物长出叶子,是不及物动词。比如:
- The trees will leaf out in spring.(树木会在春天长出叶子。)
- The rose bush has started to leaf after the rain.(雨后玫瑰丛开始长叶了。)
三、leaf常见的固定搭配与习语
1. take a leaf out of someone's book
这是一个常用习语,意思是模仿某人、以某人为榜样。例如:
- If you want to improve your English, take a leaf out of her book and read every day.(如果你想提高英语水平,就学她的样,每天阅读。)
2. turn over a new leaf
表示洗心革面、改过自新,开启全新的生活状态。比如:
- After his accident, he decided to turn over a new leaf and live a healthier life.(经历事故后,他决定洗心革面,过上更健康的生活。)
3. in leaf
用来描述树木或植物处于长叶的状态,反义词是out of leaf(落叶状态)。例如:
- The forest is in leaf during summer, making it a perfect place for hiking.(夏天森林枝繁叶茂,是徒步的好去处。)





