furnace sth
及物用法，表示把某物放进炉子里加热。
The glassmakers furnaced the raw materials for six hours.
玻璃工匠把原料放在炉中加热了六个小时。
像炉子那样呼出；像炉子一样呼出。；在炉中烧
to heat (something) in a furnace
在炉中加热。
To heat in a furnace.
像炉子一样呼出。
To exhale like a furnace.
一般现在时
The factory furnaces the metal parts daily.
这家工厂每天将金属零件放入熔炉加热。
一般过去时
They furnaced the batch at high temperature.
他们当时在高温下用熔炉加热了那批材料。
一般将来时
The crew will furnace the raw materials next week.
下周工作人员将用熔炉加热原材料。
规则动词；用法较正式，多见于工业或技术语境。
The workshop furnaces the iron to make it soft enough to bend.
车间把铁放入炉中加热，使它软到可以弯曲。
用法提示：句中的 furnaces 是动词 furnace 的第三人称单数形式，表示“在炉中加热”。
They furnaced the ore until the metal inside melted out.
他们把矿石放在炉中加热，直到里面的金属熔化流出。
用法提示：句中的 furnaced 是动词 furnace 的过去式，表示“在炉中加热”。
We will furnace the sand and soda to make a thin sheet of glass.
我们将把沙子和纯碱放在炉中加热，以制成一片薄玻璃。
用法提示：句中的 will furnace 用动词原形表示一般将来时，意为“在炉中加热”。
及物用法，表示把某物放进炉子里加热。
The glassmakers furnaced the raw materials for six hours.
玻璃工匠把原料放在炉中加热了六个小时。
被动结构，强调受热过程，常见于工业或技术语境。
The steel was furnaced at a very high temperature.
这种钢在非常高的温度下被炉火加热过。
不及物用法，形容像炉子一样呼出热气，多用于文学描写。
The old train furnaced as it climbed the hill.
那列旧火车在爬坡时像炉子一样喷着热气。
grammar · medium
易错句子They furnace the glass yesterday.
正确表达They furnaced the glass yesterday.
英语过去时要用动词过去式 furnaced；汉语动词没有时态变化，容易误用原形。
grammar · medium
易错句子He furnace the glass every day.
正确表达He furnaces the glass every day.
一般现在时主语为第三人称单数时，动词要加 -s，furnace 变为 furnaces；汉语没有主谓一致变化。
grammar · medium
易错句子The glass furnaced for two hours.
正确表达The glass was furnaced for two hours.
furnace 作“在炉中加热”讲时是及物动词，glass 是受热对象，不能作主语执行该动作；应用被动语态 was furnaced。
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