an electrical
electrical 作名词时是可数名词，指电气工程师，多用于口语中的简称。
My father is an electrical at a power company.
我父亲是一家电力公司的电气工程师。
电气工程师。
An electrical engineer.
The electrical arrived early to inspect the new wiring.
电气工程师很早就来检查新的线路。
用法提示：electrical 在此作名词，意为电气工程师，在句中作主语。
We called an electrical to fix the faulty circuit breaker.
我们叫了一位电气工程师来修理有故障的断路器。
用法提示：electrical 在此作名词，指电气工程师，作动词 called 的宾语。
The electricals are meeting in the main office to discuss the power plan.
电气工程师们正在主办公室开会讨论电力方案。
用法提示：electricals 是 electrical 的复数形式，作名词，指多位电气工程师。
electrical 作名词时是可数名词，指电气工程师，多用于口语中的简称。
My father is an electrical at a power company.
我父亲是一家电力公司的电气工程师。
复数 electricals 指多名电气工程师，加定冠词表示特定的一群。
The electricals are repairing the wiring in the building.
那些电气工程师正在修理楼里的线路。
与数词或表示数量的词连用时，用复数形式 electricals。
The project hired two electricals and one mechanic.
这个项目雇了两名电气工程师和一名机械师。
grammar · medium
易错句子My father is an electric engineer.
正确表达My father is an electrical engineer.
electric 和 electrical 分工不同：electric 指“用电驱动的、带电的”（如 electric car、electric shock），electrical 指“与电有关的、电气方面的”，用于专业、系统、设备等，如 electrical engineer。中文两者都译成“电”，所以要记住这个固定搭配是 electrical engineer，不能用 electric。
grammar · medium
易错句子She works as electrical engineer at a big company.
正确表达She works as an electrical engineer at a big company.
electrical engineer 是可数名词短语，单数形式表示一个人时前面必须加冠词。中文没有冠词，中国学习者最容易漏掉。这里 electrical 以元音音素 /ɪ/ 开头，所以用 an，而不是 a。
grammar · medium
易错句子I want to major in electrical engineer.
正确表达I want to major in electrical engineering.
major in 后面要接学科或专业名称，不能接表示人的名词。“电气工程”这门学科是 electrical engineering，而 electrical engineer 指“电气工程师”这个人。中文“工程”和“工程师”只差一个字，容易混淆，所以要说 major in electrical engineering。
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