1
sth depreciates
不及物用法，主语是物品本身，表示“贬值、跌价”。
New cars depreciate quickly in the first few years.
新车在头几年贬值很快。
贬值；跌价
先理解核心含义，再看它在真实句子里的用法。
贬值；跌价
to lose value over time
New cars depreciate quickly in the first few years.
新车在头几年贬值很快。
常指货币或资产随时间价值下降
降低价格或估值；贬低价值。
To lessen in price or estimated value; to lower the worth of.
随时间贬值。
To decline in value over time.
轻视或贬低。
To belittle or disparage.
depreciate
Base
原形
depreciates
3rd person
第三人称单数
depreciating
-ing
现在分词
depreciated
Past
过去式
depreciated
Past participle
过去分词
Cars depreciate quickly in the first year.
汽车在第一年贬值很快。
The equipment depreciated by 20% last year.
这些设备去年贬值了20%。
The value of the currency has depreciated sharply.
这种货币的价值已经大幅贬值。
depreciate 可作不及物动词（贬值）或及物动词（贬低、降低价值），过去式和过去分词均为 depreciated。
New cars depreciate quickly, so many people buy used ones.
新车贬值很快，所以很多人买二手车。
The laptop's value depreciated after the screen cracked.
屏幕摔裂后，这台笔记本电脑的价值就下降了。
If you use a phone for two years, it usually depreciates by half.
一部手机如果用了两年，通常会贬值一半。
不及物用法，主语是物品本身，表示“贬值、跌价”。
New cars depreciate quickly in the first few years.
新车在头几年贬值很快。
及物用法，后接受贬值影响的事物，表示“使…贬值、降低…的价值”。
The accident depreciated the car.
事故使汽车贬值了。
Not this
The car depreciates its value quickly.
Use this
The car depreciates in value quickly.
depreciate 作不及物动词时，主语本身就是贬值的事物，不能把 value 当作宾语；要用介词 in 引出方面，或改为 The value of the car depreciates quickly。
Not this
The machine depreciated 20% over five years.
Use this
The machine depreciated by 20% over five years.
表示贬值幅度或差额时，depreciate 后面要用 by + 数量，直接接数字不符合英语的表达习惯。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
贬值；价值下降
A new car depreciates in value the moment you drive it off the lot.
新车一开出停车场就贬值了。
随时间贬值；随着时间推移而贬值
Electronic gadgets tend to depreciate over time as newer models appear.
随着新型号的出现，电子产品往往会随时间推移而贬值。
迅速贬值；快速贬值
Luxury cars typically depreciate rapidly in the first few years.
豪华车通常在头几年迅速贬值。
对美元贬值
The Brazilian real has depreciated sharply against the dollar this year.
今年巴西雷亚尔对美元大幅贬值。
使资产折旧；对资产计提折旧
Accountants depreciate intangible assets over their expected useful life.
会计师按预期使用寿命对无形资产计提折旧。
Use depreciate naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
记忆联想：与 appreciate（增值）相反，depreciate 表示价值向下走，即贬值、降价。
语域：formal 常见场景：finance、accounting depreciate 多用于正式语境。作不及物动词时，通常指货币或资产贬值，常见于财经报道或经济分析；作及物动词时，在会计中表示对资产计提折旧，正式语中也用来表示贬低。日常口语中更常说 lose value 或 go down in value。
Only appreciate rhymes with depreciate: both stress /priːʃieɪt/. Beware lookalikes ending in -ciate or -tiate (associate, negotiate, officiate, enunciate, initiate): their stressed vowels differ (enunciate also uses /s/ instead of /ʃ/), so they do not rhyme.
Dictionary facts from ECDICT, WIKTIONARY.