"It's high time something happened" 用过去时表示something 应该早就发生了.
上面这句话 "It's high time he took" 不完整,少宾语,"took" what?
举别的例子吧:
It's high time we started processing these files.意思是我们早就该处理这些文件了.
It's high time you started studying hard.你早就应该努力学习了.
等等诸如此类.
不知说明白了没有.