prior [noun]
‘prior’ 直接修饰名词，表示‘先前的’。
She had no prior experience.
她没有先前的经验。
先前的；较早的；在前的
更重要的；优先的；先验的；在先的；时间上更早的；更重要的
Existing or occurring before something else in time or order; earlier.
Coming before in order or time; earlier, former, previous.
More important or significant.
在先的；时间上更早的
earlier in time
Chiefly in prior probability: of the probability of an event: determined without knowledge of the occurrence of other events that bear on it, before additional data is collected.
We need prior approval for any changes.
任何变更都需要事先批准。
用法提示：形容词修饰名词 approval，表示“事先的”
She had prior knowledge of the event.
她事先知道了这个活动。
用法提示：形容词修饰 knowledge，表示“先前的”
I'm sorry, I have a prior commitment.
抱歉，我有约在先。
用法提示：形容词修饰 commitment，表示“先前的”
‘prior’ 直接修饰名词，表示‘先前的’。
She had no prior experience.
她没有先前的经验。
‘prior to’ 是固定短语，相当于‘在……之前’，后接名词或动名词。
Please inform us prior to your arrival.
请在你到达之前通知我们。
grammar · medium
易错句子He arrived prior than the meeting.
正确表达He arrived prior to the meeting.
错误使用了“prior...than”结构。英语中“prior”常与“to”搭配，表示“在…之前”，而“than”用于比较级，不用于时间先后。
grammar · medium
易错句子This task is more prior than that one.
正确表达This task is prior to that one.
“prior”本身已包含比较意义，通常不加“more”，且搭配介词“to”而非“than”。
prior强调时间顺序上的在先，而previous通常指在说话时间之前发生的，用法更广泛
prior指时间上更早，former强调过去的状态或身份，常与latter对应
prior侧重时间顺序中的在先，preceding通常指紧接在前的
在…之前
Prior to the meeting, please review the agenda.
会议前请查看议程。
已有知识；先前了解
Students with prior knowledge of the topic will find the lesson easier.
对该主题已有了解的学生会发现这课更容易。
先前经验；以往经历
She was hired because of her prior experience in customer service.
她因先前在客户服务方面的经验而被录用。
事先通知
Please give us prior notice if you plan to visit.
如果你计划来访，请事先通知我们。
事先批准
All purchases above $100 require prior approval from the supervisor.
所有超过100美元的购买都需要主管事先批准。
先前的安排；已有约定
He declined the invitation due to a prior engagement.
他因已有安排而谢绝了邀请。
常与prior搭配为prior notice，表示事先的通知。
prior knowledge指先前已有的知识，是时间顺序上的前位。
prior experience指过去的经验，与“先前的”时间语义相关。
prior consent表示事先同意，强调时间上先于某行动。
prior offense指前科，即更早之前犯下的罪行。
在……之前
All flights were canceled prior to the storm.
暴风雨来临前，所有航班都被取消了。
已有的安排；事先的约定
She declined the dinner invitation because of a prior engagement.
她因已有安排而婉拒了晚宴邀请。
事先不通知
Prices are subject to change without prior notice.
价格如有变动，恕不另行通知。
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