above someone's head的用法和样例：
- I can't reach it; it's well above my head.
- A shell splinter embedded itself in the wall above his head.
- All that sort of thing is well above my head.
- I need50 dollars this month to keep my head above water.
- Nancy is head and shoulders above the rest of the class in literature.
- The waiters get good tips over and above their wages.