added + noun
added 作形容词时多放在名词前作定语，表示“额外的、附加的”，强调在原有事物之外新增的部分。
Regular exercise has added benefits for mental health.
经常锻炼对心理健康有额外的好处。
额外的；附加的
额外的；更多的
existing or provided in addition to what is usual or expected; extra
额外的；更多的
make an addition (to); join or combine or unite with others; increase the quality, quantity, size or scope of
The added salt in the soup made it taste better.
汤里额外加的盐让它味道更好了。
用法提示：added 作定语形容词，修饰 salt，表示‘额外添加的’。
We offer free delivery with no added charges.
我们提供免费送货，没有额外费用。
用法提示：added 作定语形容词，修饰 charges，表示‘附加的’。
The extra training gave employees added confidence.
额外的培训给了员工更多的信心。
用法提示：added 作定语形容词，修饰 confidence，表示‘额外的’。
added 作形容词时多放在名词前作定语，表示“额外的、附加的”，强调在原有事物之外新增的部分。
Regular exercise has added benefits for mental health.
经常锻炼对心理健康有额外的好处。
这一结构用来说明附带的好处或便利，of 后接具体说明该好处的内容。
She chose the smaller flat, with the added advantage of a garden.
她选了那套较小的公寓，还多了一个带花园的好处。
用于引出额外的好处或问题，that 从句说明具体内容，语气比直接列举更突出。
An added benefit is that the battery lasts two days.
还有一个额外的好处是电池能用两天。
grammar · medium
易错句子The online version is an added for busy people.
正确表达The online version is an added benefit for busy people.
added 是修饰名词的形容词，不能像中文“额外的”那样单独作名词；需要补出被修饰的名词，如 benefit。
grammar · medium
易错句子The receipt shows added value tax.
正确表达The receipt shows value-added tax.
固定术语是 value-added tax（增值税），其中 value-added 是复合修饰语；added value 意为“附加价值”，不能用来指这种税。中文“增值税”容易直译成 added value tax。
两者都可译作“额外的”，但 additional 是中性、正式的“在原有基础上再增加的”，常作定语，如 additional costs；added 更强调“添加后带来的”附加好处，常见于 added value、added bonus 等固定搭配。
extra 更口语化，既可指“额外的”也可指“多余的”，还能作副词；added 通常不表示“多余”，且多见于名词前的固定搭配，如 added advantage。
读音 /ˈædld/ 与 added /ˈædəd/ 接近，拼写只差一个字母，但 addled 意为“头脑糊涂的”，与“额外的”无关；看到 -led 结尾应想到“糊涂”，而非“添加”。
add + -ition
addition + -al
additional + -ly
add + -itive
add + on
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