suddenly是时间副词还是方式副词

suddenly是时间副词，意思是突然地，例如：

1、They suddenly became aware of people looking at them.他们突然意识到有些人在瞧着他们。

2、Suddenly it clicked ─ we'd been talking about different people.我们突然领悟到原来我们谈论的不是同一个人。