luck is what happens when preparation meets opportunity 这句的句式结构与语法应该怎么理解?what在这里是干嘛用的!

this is what happens. luck is what happens when preparation meets opportunity 这句的句式结构与语法应该怎么理解?what在这里是干嘛用的! What is good luck and bad luck?怎样回答? what happens what was happened what happens what is happening的区别和用法? what happens what is in chinese good luck? Life is what happens while you're busy making plans.Life is what happens 是什么句型, what happens在这句里是什么意思?what happens tonight is not merely a small step 解释这句话：What happens is not as important as how you react to what happens. Experience is not what happens to a man;it is what a man does with what happens to him experience is not what happens to you ,it is what you do with what happens to you. Experience is not what happens to a man;it is what a man does with what happens to him.248825265 experience is not what happens to u ,it is what u do with what happens to u. this is what happens 为什么不写成 this is what happenethis is what happens 为什么不写成 this is what happened? this is not always what happens but it is what should happen特别是what 的用法 what is luck写一篇文章.60字左右.帮个忙就一天 Red mean good luck.What colour is red? What happens after the