suddenly是時間副詞還是方式副詞

suddenly是時間副詞，意思是突然地，例如：

1、They suddenly became aware of people looking at them.他們突然意識到有些人在瞧着他們。

2、Suddenly it clicked ─ we'd been talking about different people.我們突然領悟到原來我們談論的不是同一個人。