ID: 23416218

OD4 Unit1 知识点总结

日期:2025-09-23 科目:英语 类型:小学素材 查看:12次 大小:2587166B 来源:二一课件通
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OD4,Unit1,知识点,总结
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OD4 A Look Word Phonetic Meaning Example Sentence moon [mu n] n.月球;月亮;卫星;月相 They were the first men to land on the moon. asteroid [ st r d] n.小行星; adj.星状的; There is an asteroid on a collision course with the Earth. comet [ k m t] n.彗星;扫帚星 We were not altogether sure that the comet would miss the Earth. meteorite [ mi ti ra t] n.陨石 The blast may have vaporised the meteorite. Look Word Phonetic Meaning Example Sentence solar system [ s l s st m] n.太阳系;类太阳系 Saturn is the second biggest planet in the solar system. stars [stɑ z] n.星级;星;恒星;星号;星状物;星形饰物; These stars look very bright. galaxy [ ɡ l ksi] n.星系;银河;银河系;人才荟萃;群英 The Galaxy consists of 100 billion stars. universe [ ju n v s] n.天地万物;(已知宇宙以外的)宇宙;万象 Our earth is but a part of the universe spacecraft [ spe skrɑ ft] n.航天器;宇宙飞船; My dream spacecraft has golden wings. Look Word Phonetic Meaning Example Sentence telescope [ tel sk p] n.望远镜 The telescope was pointing in the wrong direction. observatory [ b z v tri] n.天文台;气象台;天文观测站; The storm damaged the old observatory in 2020. B 星系(galaxy) 是最大的结构单位,由数十亿至数千亿颗恒星、行星、星云、暗物质等组成。例如,我们所在的 银河系(Milky Way galaxy) 就是一个巨大的星系。 太阳系(solar system) 是星系中的一个微小部分,位于银河系的一个旋臂上。它以 太阳 为中心,包括八大行星(如地球)、矮行星、小行星、彗星、卫星(如月球)以及尘埃和气体等。 月球(moon) 是围绕行星运行的天然卫星、地球的卫星。月球(The Moon) 是太阳系的一部分,而其他行星(如木星、土星)也有自己的卫星。 陨石(meteorite) 是来自太空的岩石或金属块,通常是 小行星或彗星的碎片。当它们进入地球大气层并坠落到地面时,就称为陨石。它们可能来自太阳系内的其他天体,甚至可能来自更遥远的星系。 四者的层级关系: 星系(galaxy) → 包含多个 恒星系统(如太阳系solar system) → 太阳系包含行星及其卫星(如月球moon) → 陨石meteorite可能是太阳系或星系中其他天体的碎片。 简单来说:陨石可能来自太阳系或更远的星系,而月球是太阳系中地球的卫星,太阳系又是银河系中的一小部分。 Word Phonetic Meaning Example Sentence vast [vɑ st] adj.巨大的;庞大的 This vast archive has been indexed and made accessible to researchers. dwelled [dweld] v.居住;栖身; He dwelled in a small county. speck [spek] n.斑点;小点;污点; Identification of bacterial strip speck disease on rice grain disk [d sk] n.磁盘;磁碟; Every file on the same disk must have a different name. 常用搭配: live with one's family 和家人一起生活 in a quiet neighborhood 在一个安静的社区/街区 in one's free time 在某人的空闲时间 study the secrets of (sth) 研究...的秘密 help sb (to) understand/realize/do sth 帮助某人理解/意识到/做某事 (to 可省略) one of billions/millions/thousands (仅仅) 是数十亿/数百万/数千中的一个 travel to (place) from beyond (place) 从...之外的地方旅行到... (e.g., from beyond Mars) so vast that... 如此广阔以至于... it takes (time) to do sth 做某事需要(多少时间)(it 是形式主语) 10. at the speed of light 以光速 11. the best way to do sth 做某事的最好方法 句型分析: 定语从 ... ...

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