a/an + electronic
electronic 作名词时为可数名词，单数前要用 a 或 an。
She bought an electronic that runs on batteries.
她买了一台靠电池运行的电子设备。
依靠电力运行的设备。
a device that runs on electricity
依靠电力运行的设备。
A device which runs on electricity.
She packed all her electronics safely in the suitcase before the flight.
她在起飞前把所有电子设备都安全地装进了行李箱。
用法提示：electronics 是名词 electronic 的复数形式，这里指需要用电运行的设备。
Water can damage the electronics inside a phone, so keep it dry.
水会损坏手机内部的电子器件，所以要让它保持干燥。
用法提示：名词 electronic（复数 electronics）在此指装在手机里、依靠电力运行的装置。
The shop sells cheap electronics like chargers and small speakers.
这家商店出售充电器和小音箱之类的廉价电子设备。
用法提示：electronics 作名词的复数使用，表示依靠电力运行的各类设备。
electronic 作名词时为可数名词，单数前要用 a 或 an。
She bought an electronic that runs on batteries.
她买了一台靠电池运行的电子设备。
指上文提过或双方都知道的那一台设备时，前面用 the。
The electronic stopped working after the power cut.
停电后那台电子设备就不工作了。
复数形式是 electronics，作主语时谓语动词用复数。
These electronics run on electricity.
这些电子设备靠电力运行。
grammar · medium
易错句子He bought a electronic for his birthday.
正确表达He bought an electronic for his birthday.
不定冠词的选择取决于读音而不是拼写：electronic 的音标是 /ɪˌlɛkˈtrɑnɪk/，以元音音素 /ɪ/ 开头，所以要用 an，不能用 a。改成 an electronic 后，冠词与后面的读音一致，句子才正确。
grammar · medium
易错句子There are many electronic in his room.
正确表达There are many electronics in his room.
electronic 作名词表示“电子设备”时是可数名词，复数形式是 electronics。汉语名词不随数量变化，学习者容易漏掉复数词尾；many 后面必须接复数名词，所以要用 electronics，不能保留单数形式 electronic。
grammar · medium
易错句子The electronics in my bag is broken.
正确表达The electronics in my bag are broken.
这里 electronics 指“我包里的多件电子设备”，是复数名词，谓语动词必须用 are。汉语没有主谓一致的变化，学习者容易沿用单数 is；改成 are 后，谓语与复数主语保持数的一致。
消费电子产品
The shop sells consumer electronics like phones and laptops.
这家店出售手机、笔记本电脑等消费电子产品。
电子产业
The electronics industry is growing fast in this region.
该地区的电子产业发展迅速。
电子产品商店
He bought a new charger at the electronics store.
他在电子产品商店买了一个新充电器。
家用电子产品
Home electronics such as TVs and fridges use a lot of power.
电视、冰箱等家用电子产品耗电很大。
便携式电子产品
Portable electronics need small, light batteries.
便携式电子产品需要小巧轻便的电池。
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电子公司
She works for a large electronics company.
她在一家大型电子公司工作。