In order to: In order to is a subordinating conjunction (从属连词). We use in order to with an infinitive form of a verb to express the purpose of something. It introduces a subordinate clause (从句). It is more common in writing than in speaking. As in Mrs Weaver had to work full-time in order to earn a living for herself and her family of five children.
中文释义：in order to的意思是为了…，使用上可以把in order to的in order省略。否定用法(为了不…)则为in order not to。句型结构为：S+V1/be动词…+in order to+ V2(原形)=S+V1/be动词…+to+ V2(原形)。例句：Steven works hard in order to pass the exam. (Steven为了通过考试而非常努力)=Steven works hard to pass the exam.