九乡新闻网蚌怎么读拼音:Unit 3 词组What were you doing when the UFO arriv...
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1. land v. go, come from a ship, aircraft, etc. 靠岸；登陆
示例
The bird landed gracefully on the water. 小鸟优雅地停在水面上。
用法点击
land 用作动词时，后面可接on，in，at等介词表示具体时间或地点。例如：The plane landed safely at Tianhe Airport at 2 pm. 飞机于下午2点安全降落在天河机场。land 还可用作名词，意思是“土地；陆地”。例如：She is glad to be on land again. 她很高兴重登陆地。
词汇拓展
谚语：Being on sea, sail; being on land, settle. 随遇而安。
相关词：mainland n. 大陆 motherland n. 祖国
homeland n. 祖国；家乡 landlady n. 女房东；老板娘
landlord n. 房东；地主 landmark n. 地标；里程碑
landslide n. 山崩 landscape n. 风景；地形
2. while conj. During the time that; at the same time as 当……时候；和……同时
示例
He was so tired that he fell asleep while he was doing his homework. 他是如此地疲倦以致于在写作业时睡着了。
用法点击
while 用作连词时，意思是“当……的时候”，表示两个动作相伴随而发生。例如：While she was typing, her brother was playing with a ball. 当她在打字时，她弟弟正在玩球。while 还可以用于对同类的两个动作进行对比，意思是“而”。例如：You like sports while I like reading. 你喜欢运动而我喜欢读书。while 用作名词时，意思是“一会儿”。例如：After a while, there came a strange noise. 过了一会儿，传来一种奇怪的声音。
3. around prep. & adv. about; not far away (in place or time) 大约；在……周围
示例
The earth moves around the sun. 地球围绕太阳转。
用法点击
around 既可以用作介词，也可以用作副词，意义上差别不大。如：He asked me to come here around the o'clock. 他要我10点左右来。（用作介词）She turned around at such a noise. 听到这样的吵闹声，她回头看了看。（用作副词）
辨析round 和around：
around 与round 通常可以互换，只不过美式英语常用around，而英式英语常用round，例如：You can see the post office round / around that corner. 在那个角落附近你就可以看到邮局。它们的不同之处是：round可以用作形容词、副词、介词、动词、名词；而around只能用作副词或介词。例如：He has a round face. 他有一张圆圆的脸。（用作形容词）The river rounded the stones. 河水使石头成了圆形。（用作动词）
词汇拓展
常用搭配：walk around 到处走
turn around 转身（转头）
look around 环顾四周；东张西望
around the world 环球
2009-03-04 人教网
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