{求助}

jammyzhouj

The most widely known images of Yosemite National Park are those made by photographer Ansel Adams, who photographed it continually from his teenage years on.

a) who photographed it continually from his teenage years on
b) who photographed it starting from his teenage years and then continually
c) who photographed it starting in his teenage years and continually from then on
d) having photographed it continually since his teenage years
e) having photographed it starting in his teenage years and then continually


A选项中的 on 是怎么理解？
D选项为什么会修饰images呢？不应该是先就近修饰AA吗？
谢谢~~

Fiona09

from ... on 是个固定搭配，表示从什么时间开始。如from now on 从现在开始；from that moment on 从那一刻起