1
for the purpose of + noun phrase
用于正式场合，表示目的。
He traveled to Beijing for the purpose of business.
他去北京是为了出差。
为了，因…起见
先理解核心含义，再看它在真实句子里的用法。
为了，因…起见
with the aim of; for the purpose of
He traveled to Beijing for the purpose of business.
他去北京是为了出差。
She studied every night for the purpose of improving her grades.
她每晚学习，目的是为了提高成绩。
They saved money for the purpose of buying a new house.
他们存钱，目的是为了买新房。
The software was tested repeatedly for the purpose of ensuring its reliability.
该软件被反复测试，以确保其可靠性。
用于正式场合，表示目的。
He traveled to Beijing for the purpose of business.
他去北京是为了出差。
后接动名词，强调动作目的。
She studied hard for the purpose of passing the exam.
她努力学习是为了通过考试。
Not this
He came for the purpose of study.
Use this
He came for the purpose of studying.
中文中“为了学习”的“学习”是动词原形，但英语中“for the purpose of”后必须接名词或动名词，不能接动词原形。
Not this
She exercises for the purpose of to lose weight.
Use this
She exercises for the purpose of losing weight.
错误地将“for the purpose of”后的部分用不定式结构，正确应为动名词短语。
Choose the next layer that will help you use for the purpose of with more confidence.
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Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
Use for the purpose of naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
后接名词或动名词，常用于正式语境，表示目的。
Dictionary facts from ECDICT.