其实句子说的是, 一些怎样.其他怎样
但是两个半句需要连词,因此用while连接,一些怎样,"而"其他怎样
原句等于两个句子：
There were some tasks the candidate could delegate.
There were other tasks (that) she had to attend to herself.
Some people dream of success while others wake up and work hard at it.
你可以改成 While some people dream of success, others wake up and work hard at it.