这句话的意思是:对于学习来说,兴趣就如同理解的能力一样至关重要,甚至更重要.
这是一个复合句,可以拆分为3个简单句:
Interest is vital to learning.
The ability to understand is vital to learning.
To learning,Inrerest is even more vital than the ability to understand.
整个句子是“主-系-表”结构,主语是Interest,谓语是is,表语是as vital to learning as the ability to understand,最后的even more so是补语.