1
an astronomer who + verb
who 引导的定语从句说明天文学家的具体工作内容。
She is an astronomer who studies distant galaxies.
她是一位研究遥远星系的天文学家。
天文学家
先理解核心含义，再看它在真实句子里的用法。
天文学家
a physicist who studies astronomy
She is an astronomer who studies distant galaxies.
她是一位研究遥远星系的天文学家。
研究天文学、恒星或物理宇宙的科学家；天文学或天体物理学家。
One who studies astronomy, the stars or the physical universe; a scientist whose area of research is astronomy or astrophysics.
研究天文学的物理学家
a physicist who studies astronomy
The astronomer spent the whole night observing the stars through a telescope.
这位天文学家整晚都在用望远镜观察星星。
My cousin wants to become an astronomer after she graduates from university.
我表姐大学毕业后想成为一名天文学家。
Several astronomers have reported a new comet in the night sky.
几位天文学家报告说夜空中出现了一颗新彗星。
who 引导的定语从句说明天文学家的具体工作内容。
She is an astronomer who studies distant galaxies.
她是一位研究遥远星系的天文学家。
become 后接职业名词，表示成为某种职业的人。
He decided to become an astronomer after watching a documentary.
他看了纪录片后决定成为一名天文学家。
work as + 职业名词，表示以某职业身份工作。
Many astronomers work as researchers at university observatories.
许多天文学家在大学天文台做研究人员。
用“the astronomer + 人名”的同位结构指出具体是哪位天文学家。
The astronomer Carl Sagan wrote many popular science books.
天文学家卡尔·萨根写了许多科普书籍。
Not this
I want to study astronomer at university.
Use this
I want to study astronomy at university.
astronomer 指“天文学家”（人），astronomy 才指“天文学”（学科）。study 后接学科名词，所以要用 astronomy。
Not this
Neil Armstrong was an astronomer.
Use this
Neil Armstrong was an astronaut.
astronomer（天文学家）和 astronaut（宇航员）形近易混。前者研究天体，后者进入太空执行任务；阿姆斯特朗是宇航员，故用 astronaut。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
业余天文学家
The amateur astronomer photographed the night sky from his backyard.
这位业余天文学家在后院拍摄了夜空。
专业天文学家
She decided to become a professional astronomer after college.
大学毕业后，她决定成为一名专业天文学家。
天文学家团队
A team of astronomers announced the discovery of a new exoplanet.
一个天文学家团队宣布发现了一颗新的系外行星。
天文学家观测
Astronomers observe distant stars using radio telescopes.
天文学家使用射电望远镜观测遥远的恒星。
天文学家发现
Astronomers discover new planets by observing light patterns.
天文学家通过观察光线特征发现新行星。
当我听到那位博学的天文学家时，
When I heard the learn'd astronomer, I grew tired and sick.
当我听到那位博学的天文学家时，我感到厌倦和不舒服。
Use astronomer naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
联想：astro- 像 astronaut 的开头，都和星星有关；研究星星的专家就是 astronomer（天文学家）。
语域：neutral 常见场景：科学讨论、新闻报道、日常对话 该词为中性用语，通常用于学术、科普、新闻等场景，也较常见于日常口语，指研究天文学的专业人士。
Astronomy and astronomer share the opening /əˈstrɑn/ sound, but astronomy ends in /nəmi/ while astronomer ends in /nəmər/. Customer has the same final /əmər/ as astronomer, although the stress falls on the first syllable. Astronaut looks similar but is pronounced /ˈæstrənɔt/ with stress on the first syllable and a different vowel. Agronomist and economist share the /nəm/ cluster but end in /ɪst/. No common word rhymes with astronomer.
Dictionary facts from DICTIONARY_API_DEV, ECDICT, WIKTIONARY.