life is 10% what happens to us and 90% how we respond to it

主系表结构.what和how引导的两句都是表语从句.
关键是10%和90%怎么理解.在这里它们是状语.如果带从句的结构不好理解,给你举个简单的例子：
The work is 50% complete.
显然这里complete才是表语,而50%只是限定complete的范围.
这句的原句是Michael Durrant的名言：
Life is 10 percent circumstance and 90 percent how we deal with it.
PS.你考研结果如何?