What have you been interested in for as long as you can remember?
就你记忆所及，你对任何事情一直有兴趣？
句中for起什么用途和含义？介词for的宾语是什么？怎么样完整剖析该句的逐一成分呢？
[直观剖析]
What（特殊疑问代词前置句首，作介词in 的宾语） have （助动词与主语倒装）you （主语）been interested （系表结构）in （介词）for as long as you can remember（介词短语，作时间状语，说明have been interested 的持续时间）?
[什么时间说明]
（1）What have you been interested in：你对什么有兴趣？目前完成时表示：从过去某时开始一直持续到今天。
（2）for long：介词短语。表示be interested“持续的时间”。
（3）在for后面用了一个比较从句：as long as you can remember （像你所能记忆的时间一样长，引申为：就你记忆所及），说明“都某事有兴趣”持续的时间，跟remember 的时间“一样长”。
[类似例句]
She has been part of my life for as long as I can remember. 在我的记忆中，她一直是我生活的一部分。
We will fight for as long as it takes. 大家要一直斗争到底。
Go home and rest for as long as you can. 回家休息，休息越久越好。
They might stay on for as long as they wished. 他们可以想呆多长时间就呆多长时间。
Keep your voicemail for as long as you like. 可以根据你的意愿保存你的语音邮件。
We can hold this position for as long as the ammunition lasts out. 只须弹药还够用，大家就能守住这个阵地。
I have been learning English for as long as 15 years. 我学英文已有十五年之久。
We can stay here for as long as our supplies hold out. 大家的提供能保持多长时间，大家就能坚持多长时间。
The insurance period can be for as long as we agree. 保险期限可以由大家商定。
Chances are, youll view the error in a purely negative light for as long as any initial shock and discomfort about it continues to exist.
大概的是，你将用完全负面的见地看待这个错误，只须你刚开始遭到的冲击和不安依旧存在的话。
Before meeting with lawmakers, Trump said the shutdown would last for “as long as it takes” as he pushes for wall money as part of any legislation to reopen agencies shuttered when their funding lapsed on Dec. 22.
特朗普说政府关门（政府停摆）的时间需要多长就会持续多长。