名詞 past:

1. the time that has elapsed
   同義詞：past times, yesteryear, yore
2. a earlier period in someone's life (especially one that they have reason to keep secret)
3. a verb tense that expresses actions or states in the past
   同義詞：past tense

形容詞 past:

1. earlier than the present time; no longer current
2. of a person who has held and relinquished a position or office
   同義詞：preceding, retiring
3. a verb tense or other construction referring to events or states that existed at some previous time

副詞 past:

1. so as to pass a given point
   同義詞：by

1. I've been there many times in the past.
   我從前去過那兒很多次。
2. He hurried past me without stopping.
   他匆忙從我身邊走過，連停都沒停。
3. They walked past without stopping
   他們一步不停地走了過去。
4. We drove past the house.
   我們開車經(jīng)過那座房子。
5. His pain is past now.
   他的痛苦現(xiàn)在已經(jīng)過去。
6. Our country has a glorious past.
   我們的國家有一段光輝的歷史。

past

adj.（形容詞）
No longer current; gone by; over:
過去的：不再現(xiàn)的；過去的；結(jié)束的：
例句：
His youth is past.
他的青春已過

Having existed or occurred in an earlier time; bygone:
往昔的：在早些時候存在或出現(xiàn)的；以往的：
例句：
past events; in years past.
過去的事情；在過去的幾年中

Earlier than the present time; ago:
以前的：比現(xiàn)在的時間早的；以前的：
例句：
40 years past.
四十年前

Just gone by or elapsed:
剛過去的：剛過去或剛消逝的：
例句：
in the past few days.
剛過去的幾天中

Having served formerly in a given capacity, especially an official one:
前任的：以前曾在一特定的職位上服務(wù)過的，尤其是正式的職位：
例句：
a past president; a past inmate of a cell.
前任總統(tǒng)；曾是囚犯

Abbr. p.Grammar Of, relating to, or being a verb tense or form used to express an action or a condition prior to the time it is expressed.
縮寫 p.【語法】 過去時的：用于表述在當(dāng)前時間之前發(fā)生的動作或狀態(tài)的動詞時態(tài)或形式的、與之有關(guān)的或此種形式的
n.（名詞）
The time before the present.
過往：在現(xiàn)時之前的時間

Previous background, career, experiences, and activities:
往事，過去：以前的背景、事業(yè)、經(jīng)歷和活動：
例句：
an elderly person with a distinguished past.
擁有輝煌過去的老人

A former period of someone`s life kept secret or thought to be shameful:
個人神秘的過往：某人早年不為人知或被認(rèn)為是恥辱的時期：
例句：
a family with a checkered past.
一個有著波折歷史的家族

Abbr. p.Grammar
縮寫 p.【語法】
The past tense.
過去時
A verb form in the past tense.
動詞的過去式
adv.（副詞）
So as to pass by or go beyond:
經(jīng)過，超過：
例句：
He waved as he walked past.
他走過時揮著手

prep.（介詞）
Beyond in time; later than or after:
超過，比…晚：在某個時間之后；遲于…或在…之后：
例句：
past midnight; a quarter past two.
半夜以后；兩點(diǎn)過一刻

Beyond in position; farther than:
遠(yuǎn)于，超過：超出某一位置；比…遠(yuǎn)：
例句：
The house is about a mile past the first stoplight. They walked past the memorial in silence.
這座房子在第一個交通指示燈大約一英里以外的地方。他們靜靜地走過紀(jì)念碑

Beyond the power, scope, extent, or influence of:
超過：超出…的權(quán)力、范圍、程度或影響力：
例句：
The problem is past the point of resolution.
這個問題實(shí)在無法解決

Beyond in development or appropriateness:
超過（某階段）：在進(jìn)展或適宜程度方面超出：
例句：
The child is past drinking from a bottle. You`re past sucking your thumb, so don`t do it.
這個小孩已不再吸奶瓶了。你已不是吮拇指的年齡了，所以別再做那樣的事了

Beyond the number or amount of:
數(shù)量超過：在數(shù)目或數(shù)量方面超過：
例句：
The child couldn`t count past 20.See Usage Note at pass
這個孩子的年齡不可能超過二十參見 pass

來源：
Middle English [from past participle of] passen [to pass] * see pass
中古英語 [] 源自passen的過去分詞 [超過] *參見 pass