She happened to be not at home.she happen not to be at home.都可以吗

题目

She happened to be not at home.she happen not to be at home.都可以吗

答案

两种都不太对哦,
She happened not to be at home.
你叙述的是过去发生的事情,就要用过去式
她碰巧不在家.
要是叙述现在的情况,就说
She happens not to be at home.