帮我解释这个几个句子结构there is nothing in this shop above five pounds

帮我解释这个几个句子结构
there is nothing in this shop above five pounds .为什么回是这样
写成there is nothing above five pounds in this shop .这样可以吗
a job more suited to his abilities 怎么理解.
he is old but still quite able .able不是形弄词吗怎么可以放在句末?
he is finding this trip very exciting 怎么理解.是一般现在时吗.he find this trip very exciting /
find +名+形 .