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cast a shadow
The tall building casts a shadow over the park.
那座高楼在公园上投下阴影。
影子；阴影；背阴处
先理解核心含义，再看它在真实句子里的用法。
影子；阴影；背阴处
A dark shape or shaded area produced on a surface when something blocks light.
The tall building casts a shadow over the park.
那座高楼在公园上投下阴影。
物体遮挡光线(或其他辐射)时投射到表面上的暗影。
A dark image projected onto a surface where light (or other radiation) is blocked by the shade of an object.
有明确边界的阴影
shade within clear boundaries
相对的黑暗,尤指光线被遮挡所致的阴暗；幽暗；晦暗。
Relative darkness, especially as caused by the interruption of light; gloom; obscurity.
未被照亮的区域
an unilluminated area
The tree cast a long shadow across the lawn.
那棵树在草坪上投下了长长的影子。
She always feels like she is living in her sister's shadow.
她总觉得自己活在姐姐的阴影之下。
A shadow fell across the page as someone stood behind him.
有人站在他身后，一个影子落在书页上。
The tall building casts a shadow over the park.
那座高楼在公园上投下阴影。
比喻受某人或某物的影响或遮蔽。
He grew up in the shadow of his famous father.
他在他著名父亲的阴影下长大。
There was a shadow of doubt in her voice.
她的声音里带着一丝怀疑。
指人变得虚弱或不如从前。
After the illness, he was a shadow of his former self.
病后，他瘦弱得已不如从前。
Not this
Let's sit in the shadow of the tree.
Use this
Let's sit in the shade of the tree.
汉语中“影子”和“阴凉处”都可用“shadow”表示，但英语中“shadow”指物体投下的影子，而“shade”指避开阳光的阴凉处。表示乘凉时应使用“shade”而非“shadow”。
Not this
There is shadow on the wall.
Use this
There is a shadow on the wall.
在英语中，“shadow”作为可数名词表示具体的影子时，前面需要加不定冠词“a”或使用复数形式。中文没有冠词，容易忽略，因此需加上冠词使句子语法正确。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
投下阴影
The tall building cast a shadow over the garden.
高楼在花园上投下了阴影。
在…的阴影下；在…附近
He lived in the shadow of his famous father.
他生活在著名父亲的阴影下。
一丝怀疑
There was a shadow of doubt in her mind.
她心中有一丝怀疑。
胆小如鼠
After the accident, he was afraid of his own shadow.
事故后，他变得胆小如鼠。
毫无疑问
It is beyond a shadow of a doubt the best film I have seen.
这毫无疑问是我看过的最好的电影。
非常胆小，疑神疑鬼
After the robbery, he was afraid of his own shadow.
抢劫之后，他变得疑神疑鬼。
毫无疑问
She proved her innocence beyond a shadow of a doubt.
她毫无疑问地证明了自己的清白。
今非昔比，大不如前
After the illness, he was a shadow of his former self.
生病之后，他大不如前。
谁知道男人心中隐藏着什么邪恶？暗影知道！
He always felt he lived in the shadow of his older brother.
他总是觉得自己活在哥哥的阴影下。
我的影子是唯一陪伴我行走的。
The dog followed closely, its shadow trailing behind.
狗紧紧跟随，影子拖在后面。
Use shadow naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
记忆‘shadow’：太阳晒出物体的影子，像斗笠遮阳，shadow即阴影。
语域：中性，多用于日常描述光线被物体遮挡形成的影子。也用于比喻，如'恐惧的阴影'。
shadow既可作可数名词（如a shadow），也可作不可数名词（如in shadow）。常与介词of连用表示'...的影子'。
Dictionary facts from DICTIONARY_API_DEV, ECDICT, WIKTIONARY.