1
on/under the pretext of + noun/doing sth
on和under均可使用，后接名词或动名词。
He left the meeting on the pretext of a headache.
他以头疼为借口离开了会议。
借口；托词
先理解核心含义，再看它在真实句子里的用法。
借口；托词
a false or invented reason used to conceal the real purpose or reason
He left the meeting on the pretext of a headache.
他以头疼为借口离开了会议。
虚假、捏造或假定的目的或理由；借口。
A false, contrived, or assumed purpose or reason; a pretense.
为掩盖真实原因而编造的虚假理由；掩饰计划的借口
something serving to conceal plans; a fictitious reason that is concocted in order to conceal the real reason
巧妙的或伪装的表象
an artful or simulated semblance
He used a headache as a pretext to leave the meeting.
他以头痛为借口离开了会议。
She arrived late under the pretext of a traffic jam.
她以交通堵塞为托词迟到了。
They used the noise complaint as a pretext to evict the tenants.
他们以噪音投诉为借口驱逐了租户。
on和under均可使用，后接名词或动名词。
He left the meeting on the pretext of a headache.
他以头疼为借口离开了会议。
She used the noise as a pretext to move out.
她以噪音为借口搬了出去。
They were looking for a pretext for war.
他们在为战争找借口。
Not this
He pretexted that he had a meeting.
Use this
He used the pretext that he had a meeting.
pretext 是名词，不可直接用作动词。应使用 'use the pretext' 或 'give a pretext' 等动词短语。
Not this
She left early with the pretext of a headache.
Use this
She left early on the pretext of a headache.
表示‘以…为借口’时，常用介词 'on' 或 'under'，而不是 'with'。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
以……为借口
He left the meeting early on the pretext of a headache.
他以头疼为借口提前离开了会议。
……的借口
The disagreement gave her a pretext for ending the relationship.
那次争执给了她结束这段关系的借口。
编造借口
He invented a pretext for his lateness.
他为迟到编造了一个借口。
把……当作借口
She used his mistake as a pretext to criticize him.
她以他的错误为借口批评他。
找到借口
He tried to find a pretext for leaving.
他试图找个借口离开。
站不住脚的借口
He came up with a flimsy pretext for missing the meeting.
他为错过会议找了一个站不住脚的借口。
以……为借口
He left the meeting early on the pretext of a headache.
他以头痛为借口提前离开了会议。
以这种或那种借口
He kept calling her on some pretext or other.
他老是以这样那样的借口给她打电话。
……的借口
The border incident served as a pretext for war.
边境事件成了战争的借口。
Use pretext naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
想象你把一篇预先写好的“文本”(text)摆在前面(pre-)当掩护，用来掩盖真实理由——这就是pretext(借口)。
语域：formal 常见场景：formal writing、news reporting、official statements pretext 是较正式的用词，多用于书面语或正式场合，口语中更常说 excuse。常见搭配为 on/under the pretext of，表示“以……为借口”。
常与介词 for 或 of 连用，如 a pretext for sth 或 on/under the pretext of doing sth
Dictionary facts from ECDICT, WIKTIONARY.