lour at sb
多用于文学描写，表示面露不悦、阴沉地看着某人，语气偏书面。
She loured at him across the table and said nothing.
她隔着桌子对他沉着脸，一言不发。
皱眉；显出阴沉之色
louring — present participle of lour
（天色或云）变得阴沉；乌云密布；呈现暴风雨欲来的凶险景象；皱眉；显得阴沉；阴沉、阴郁和威胁的,如云；天空被乌云覆盖,显示出暴风雨来临的迹象；变阴沉
皱眉；显得阴沉
To frown; to look sullen.
阴沉、阴郁和威胁的,如云；天空被乌云覆盖,显示出暴风雨来临的迹象
To be dark, gloomy, and threatening, as clouds; of the sky: to be covered with dark and threatening clouds; to show threatening signs of approach, as a tempest.
一般现在时
He lours whenever I mention the topic.
每当我提到这个话题，他就皱眉头。
一般过去时
The sky loured before the storm.
暴风雨前天空变得阴沉。
present participle
She is louring at the mess in the kitchen.
她正对着厨房的杂乱皱眉头。
He loured at the children for making so much noise.
他因为孩子们吵闹而皱起眉头。
用法提示：Loured 是 lour 的过去式，表示‘皱眉，面露不悦’。
The sky began to lour as the storm approached.
随着暴风雨逼近，天空开始变得阴沉。
用法提示：Lour 在此处为动词原形，用于描述天气变阴沉，引申自皱眉的表意。
She lours every time her name is mentioned.
每次提到她的名字，她都会皱眉头。
用法提示：Lours 是 lour 的第三人称单数形式，表示习惯性动作。
多用于文学描写，表示面露不悦、阴沉地看着某人，语气偏书面。
She loured at him across the table and said nothing.
她隔着桌子对他沉着脸，一言不发。
主语常为云、天空或山峦，表示笼罩在某物上方并显出暴风雨将至的凶险。
Dark clouds loured over the valley all afternoon.
整个下午乌云笼罩着山谷，天色阴沉。
作不及物动词，主语通常是天空、云或天色，不接宾语。
The sky loured, and the first drops of rain fell.
天空阴沉下来，第一滴雨落了下来。
现在分词 louring 可作定语，修饰 look、sky、clouds 等，表示阴沉、险恶的样子。
He gave the stranger a louring look.
他阴沉地看了那个陌生人一眼。
grammar · medium
易错句子He gave me a lour look and said nothing.
正确表达He gave me a louring look and said nothing.
lour 是动词，不能像形容词一样直接放在名词前作定语；修饰 look 这类名词要用 -ing 形式 louring，表示“阴沉的”。中文里“阴沉”既是形容词又像动词，容易让人误把动词原形当定语用。
grammar · medium
易错句子Dark clouds loured the mountains before the storm.
正确表达Dark clouds loured over the mountains before the storm.
lour 是不及物动词，后面不能直接跟宾语；要表示“乌云笼罩在某物上方”需用介词 over 引出对象。“乌云笼罩山峦”在中文里像及物结构，但英语必须补上介词。
grammar · medium
易错句子She loured to him when he mentioned the money.
正确表达She loured at him when he mentioned the money.
表示“向某人皱眉、怒视”时，lour 与 at 搭配，即 lour at sb；to 只表示方向，不用于这种带情绪的动词。汉语“对他皱眉”中的“对”容易误导学习者用 to。
glower 强调带着怒气久久盯着某人，宾语通常是人；lour 侧重脸色本身阴沉不悦，常不指明瞪着谁，还可形容天色。
scowl 是日常用词，指因生气或不满而皱眉板脸；lour 更书面、偏文学，且能用于云和天空阴沉欲雨，scowl 不能形容天气。
loom 的主语是隐约出现并带有威胁感的物体或情势；lour 的主语是天空、云或人的脸色，说的是阴沉本身而非逼近的动作。
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